
You are an expert in evaluating and guiding a web navigation agent. Your task is to help the agent effectively complete a given mission on a website based on the user’s intent. The agent’s goal is to navigate through the website to reach the desired state that aligns with the user’s objective.

You will analyze the next state of the webpage (OBSERVATION) after each action and determine whether the agent is successfully progressing towards the task goal. You will also assist the agent by choosing the next action if necessary, considering the dynamics of the web environment and how each state transitions.

Key Points:
1. Understand the intent:
- Identify the user’s goal (e.g., finding information, navigating to a specific page, modifying content).
- Make sure the next state of the webpage aligns with achieving that goal based on the current state and user’s intent.

2. Evaluate the Next State:
- When assessing the next state, consider how it contributes to reaching the intended goal. If the next state moves the agent closer to the user’s goal, it is evaluated positively.
- If the next state does not progress towards the goal or leads to an error, suggest alternative actions that will result in a more favorable next state.

3. State Guidance:
- If the next state shows that the agent is on the right track but hasn’t completed the task yet, recommend further actions that could bring the next state closer to the goal. Focus on guiding the agent to reach a state that reflects clear progress towards the goal.

4. Types of Tasks:
- Information Seeking: The next state must provide the specific information the user seeks (e.g., product price, reviews). If the information is unavailable, the next state should explicitly indicate that.
- Site Navigation: The next state must reflect that the agent has navigated to the exact page or item. Check if the state includes content based on the user’s intent.
- Content Modification: The next state should indicate that the requested content modification has been successfully committed (e.g., form submission, comment posting).
- General Task: Evaluate the entire process to ensure the next state reflects task completion. Stop actions should only be issued when the objective is met.

5. Common Pitfalls:
- Repetitive typing actions: Ensure that the next state does not show corrupted input due to repeated typing.
- Incomplete navigation: Ensure the agent’s next state reflects navigation to the specific item or content, not just to a general page or category.

Output Format with a Score Between 0 and 1:
Each next state will be evaluated with a score between 0 and 1, assessing how well the state moves towards the task’s completion. This score provides nuanced feedback on the state’s effectiveness.
0: The next state is a failure or leads away from the task.
Values closer to 0 (e.g., 0.1, 0.2): The next state does not contribute meaningfully but isn’t a total failure.
0.5: The next state is neutral, and the agent is maintaining its current position.
Values closer to 1 (e.g., 0.7, 0.8): The next state is helpful and moves the agent closer to the task goal.
1: The next state is optimal and is directly aligned with completing the task.

Response Format:
1. You should write your rationale providing a detailed analysis of the next state and reasoning for its score, providing a score between 0 and 1 based on how well the next state contributes to task completion.

Output Format: [Rationale] <your thought> [Score] <a value between 0 and 1>

OBJECTIVE: Track a bus leaving from Abbotsford.
PREVIOUS ACTION: ["click [119] where [119] is 'Check my bus'", "click [126] where [126] is 'Track my bus'", "type [11287] [Abbotsford] where [11287] is 'From' hasPopup: listbox required: False"]
CURRENT OBSERVATION:	[11523] image 'Megabus'
	[11571] heading 'Track your Bus'
	[11578] tablist '' multiselectable: False orientation: horizontal
		[11579] tab 'Location Search' selected: False
		[11581] tab 'Service Number' selected: False
		[11587] combobox 'From' hasPopup: listbox required: False
		[11525] image 'Clear input'
		[11529] image 'Change direction'
		[11598] combobox 'To (optional)' hasPopup: listbox required: False
		[11527] image 'Location'
		[11599] button 'Find my bus'
	[11519] image 'facebook'
	[11521] image 'instagram'
CURRENT ACTION: click [182] where [182] is 'Abbotsford'
NEXT STATE PREIDCTION: 	[11758] image 'Megabus'
	[11806] heading 'Track your Bus'
	[11813] tablist '' multiselectable: False orientation: horizontal
		[11814] tab 'Location Search' selected: False
		[11816] tab 'Service Number' selected: False
		[11822] combobox 'From' hasPopup: listbox required: False
		[11760] image 'Clear input'
		[11764] image 'Change direction'
		[11825] combobox 'To (optional)' hasPopup: listbox required: False
		[11762] image 'Location'
		[11767] button 'Find my bus'
	[11754] image 'facebook'
	[11756] image 'instagram'
[Rationale] The current action of clicking 'Abbotsford' is a step towards completing the user’s objective of tracking a bus leaving from Abbotsford. In the current observation, the agent has already interacted with the 'From' field by typing 'Abbotsford', indicating a clear intent to specify the starting location. By clicking 'Abbotsford', the agent is likely selecting it from a dropdown or suggestion list, which confirms and finalizes the location input.

The next state shows that the 'From' combobox is still present, and while it remains as a combobox, the user has not yet moved on to the next crucial step of finding the bus. However, the presence of the button 'Find my bus' suggests that the agent is close to being able to proceed. The overall change from the current observation indicates that the action taken is functional and contributes positively to the task, maintaining the continuity of progress toward tracking the bus.

The score of 0.67 reflects this positive movement but also acknowledges that the task is not yet complete; the agent still needs to click 'Find my bus' to finish tracking the bus. Thus, while the next state is beneficial and moves the agent closer to the goal, it is not fully complete, justifying the score in the range of 0.6 to 0.7. 

[Score] 0.67