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

ASSISTANT: Hello, how may I aid you?

USER: I would like to attend Young women's summit in Phoenix, PHX. Can you help me in booking from Dallas & Fort Worth, DFW?

ASSISTANT: Sure, may I know your trip dates?

USER: My journey dates on 05/16 and 05/18.

ASSISTANT: Help me with the source code.

USER: I can spend 200 for ticket fare.

ASSISTANT: Help me with the destination code.

USER: Source point already mentioned above.

ASSISTANT: I found a flight with the number 1005 in an airline UA.

USER: Ok, please proceed.

ASSISTANT: Shall I proceed to book?

USER: OK.

ASSISTANT: Your flight ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.