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

ASSISTANT: Hello, how may I assist you?

USER: I am planning for an farewell party at Denver, can you book a ticket for me?

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

USER: I am planning to start on 02/20 and return on 02/22.

ASSISTANT: Ok, may I know your airport codes please?

USER: Please make sure that connection limit is 1. My nearest airport codes are IAH sand DEN.

ASSISTANT: Ok, hold on for a moment. I found a flight for you with UA airline and it costs you 100. Shall I proceed?

USER: Please book it.

ASSISTANT: Your ticket has been booked with 1026 flight number.

USER: Thank you for booking instantly.

ASSISTANT: Welcome.

USER: You are welcome.

ASSISTANT: Thank you for choosing us.