You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Jonathan Baker here. I need  a flight from ATL to DFW, can you please help me?

ASSISTANT: Sure, may I know your travel dates please? Ok, hold on for a moment.

USER: My trip dates are from 01/26 till 01/28.

ASSISTANT: Let me check.

USER: Ok, take your time.

ASSISTANT: I found a flight for you with Delta airline and it costs you 200.

USER: Please proceed.

ASSISTANT: Your ticket has been booked with 1003 flight number.

USER: Thank you for booking.

ASSISTANT: Welcome.