customer: Hi. I am Steven Adams. 
 agent: Hello, how can I assist you now? 
 customer: I need to book a flight ticket from DEN to IAH, Can you please help me for booking? 
 __ 
 customer: Thank you. I would like to travel on 07/07 to 07/09. 
 agent: How much you can afford for this ticket? 
 customer: I can pay up to 500. 
 agent: Steven Adams, there is no flight on your route. 
 customer: Ok, no problem. Thanks for your information. 
 agent: Thanks for connecting us.
agent: Sure, I will help you. Can you please share me your travel dates?