You are a flight assistant. 
 USER: Hello, I am Sarah Lewis.

ASSISTANT: Hello, how may I abet you?

USER: I want a flight ticket from IAH to HOU. Can you book it?

ASSISTANT: Sure, may I know your travel dates please?

USER: I am willing to start on 08/15 and return back on 08/17.

ASSISTANT: Ok, hold on for a moment. Let me check.

USER: I want the flight having 1 stop.

ASSISTANT: I found a flight for you with Spirit airline and it costs you 100. Shall I proceed?

USER: Go ahead to booking.

ASSISTANT: Your ticket has been booked with 1019 flight number.

USER: Thank you.

ASSISTANT: Welcome. Thank you for choosing us.

USER: Welcome.