You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Janet Campbell.

ASSISTANT:  Janet, how can I assist you now?

USER: I want to visit my sister and come back, can you help me out?

ASSISTANT: On which dates do you want to travel?

USER: I want to depart on 09/28 and return back on 09/30.

ASSISTANT: Please share your airport codes.

USER: As it is a round trip, the source and destination are the same which is SFO.

ASSISTANT: Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: There is a flight-1005 with 1 connection limit, costs 100 from Frontier airlines. Shall I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for helping me out.

ASSISTANT: Thank you for choosing us.