You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am looking for a flight from BOS to DEN, can you help me in booking?

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

USER: Sure, my planned travel dates are Jan 18 and Jan 20.

ASSISTANT: Do you want connecting flight or direct flight?

USER: Please look for a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No, thank you.

ASSISTANT: May I know your name please?

USER: Myself Catherine Lewis.

ASSISTANT: We found an AA airline, flight number: 1021, price: 700 with one connection.

USER: That's fine, please proceed with booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for the service.

ASSISTANT: Thank you for choosing us.