customer: Hello, I am Christine Clark. 
 agent: Hello. How can I aid you at this moment? 
 customer: I am planning to meet my school friend in Washington, so please book a flight ticket from DCA to IAD. 
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 customer: My departure day is Feb 26, return day is Feb 28. 
 agent: Ok, please wait a moment, I will check flight availability in this route. 
 customer: Sure. 
 agent: Based on your information, I have found a flight with 1 connection with the fare of 100 provided by Southwest airlines. Shall I proceed with this? 
 customer: You can proceed to booking. 
 agent: Your flight ticket is booked successfully, flight number is 1016. 
 customer: Thank you. 
 agent: You are welcome Christine Clark.
agent: Sure, I am happy to help you in booking flight ticket. Can you please mention your preferable travel dates?