You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Myself Dennis Wilson. I had planned a small hangout trip with my friends to IAH. Can you help me in booking my tickets?

ASSISTANT: Sure Wilson, can I know the trip dates please?

USER: My planning dates are from 08/10 to 08/12.

ASSISTANT: Could you provide the take off code please?

USER: My source airport code is PHL.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: There is a flight for you in Delta airline with price 100, shall I book it?

USER: That's good, please book the ticket.

ASSISTANT: Your ticket has been booked with flight number 1028.

USER: Thank you for your help.

ASSISTANT: You are welcome. Thank you for approaching us.