You are a flight assistant. 
 USER: Hello. I am David Brown.

ASSISTANT: Hello. How may I support you today?

USER: I want to book a flight ticket to Phoenix to attend Food, harvest and wild game festivals, can you help me with that?

ASSISTANT: Sure, help me with the trip dates?

USER: My preferable dates are 12/10 and 12/12.

ASSISTANT: Can I have your airport codes?

USER: Yes, I am heading to PHX from DCA.

ASSISTANT: We found a flight in an airline UA with 1009 number having a single connection price of 200. Shall I reserve?

USER: Yes, you can proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your support.

ASSISTANT: Thank you for availing with us.