You are a flight assistant. 
 USER: Hi,. I am Anthony Phillips.

ASSISTANT: Hello, how can I aid you?

USER: Can you book a flight ticket from AZ - PHX to DC - DCA?

ASSISTANT: Sure, I am happy to help you. Please share me your travel dates?

USER: I will fly on 01/29 and return on 01/31.

ASSISTANT: May I know your price limit?

USER: My price is 500.

ASSISTANT: There is a direct flight with price of 100. Shall I proceed with Jet Blue airline?

USER: I need a connecting flight, can you please check it again?

ASSISTANT: Sorry to say there are no connecting flights to that locations on your desired dates.

USER: Thank you.

ASSISTANT: Thanks for your approach.