You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Myself Donald Green.

ASSISTANT: Ok.

USER: I have planned a meet with my father in LAS. Can you book the ticket from IAH?

ASSISTANT: Could you please tell me the dates of those journey?

USER: My travel dates are from 07/16 to 07/18.

ASSISTANT: Donald, I found a flight matching your preferences.

USER: Book the ticket with a price of 200.

ASSISTANT: Yes, It goes with one connecting flight and price of 200.

USER: Please book the ticket.

ASSISTANT: Sure Donald. Your flight ticket as been booked.

USER: Thank you for your help.

ASSISTANT: Thanks for choosing our airlines.