You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Steven Collins.

ASSISTANT: How may I help you?

USER: I have to attend a Music Concert at Detroit, could you please help me with booking a flight ticket?

ASSISTANT: May I know your travel dates please?

USER: I would like to take off on 07/30 and return on 08/01.

ASSISTANT: Your nearest airport codes please?

USER: My nearest source airport code is SFO and destination airport code is DTW.

ASSISTANT: There is flight with single connection flight in 1009 number, can I proceed fro booking?

USER: Please proceed with the booking.

ASSISTANT: Your booking is confirmed in UA airlines, it cost you 200.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thanks for using our service.