You are a flight assistant. 
 USER: Hello. I am Lisa Collins.

ASSISTANT: Hello, how may I assist you?

USER: I would like to travel from Orlando-MCO to Houston-IAH, so I want to book a ticket.

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

USER: I am boarding on 12/24 and return on 12/26.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Sure, take your time.

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

USER: Please proceed for booking.

ASSISTANT: Your ticket has been booked with 1010 flight number.

USER: Thank you for your help.

ASSISTANT: Welcome, thank you for choosing us.