You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Helen Evans. I am planning to attend music concert at Detroit, can you please help me with booking a flight ticket?

ASSISTANT: Can I know your travel dates?

USER: Sure, I would like to take off on 09/12 and return back on 09/14.

ASSISTANT: Please share your airport codes.

USER: My source airport code is PHX and the destination airport code is DTW.

ASSISTANT: The flight 1011 of Frontier airlines is available on your requested dates with 1 connection.

USER: Yes, please proceed with the booking.

ASSISTANT: Helen, your reservation has been done successfully.

USER: Thank you for your assistance.

ASSISTANT: You are welcome.