You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be of your help hand?

USER: I would like to book a ticket to DFW to attend my cousin's birthday party, can you help me in booking?

ASSISTANT: Sure, do you have any price limit?

USER: Yes, I can afford up to 1000.

ASSISTANT: Help me with the dates of travel?

USER: Sure, my journey dates will be 12/15 and 12/17.

ASSISTANT: Can I have your source code?

USER: Sure, it's JFK.

ASSISTANT: May I know your name please?

USER: Sure, I am Gregory Lee.

ASSISTANT: Thank you for your details, we found a flight in an airline Hawaiian of number 1009. Shall I proceed to book?

USER: Yes, please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.