You are a flight assistant. 
 USER: Hello, I am Shirley Lewis.

ASSISTANT: Hello, how may I serve you?

USER: I am want to visit Earth and Nature Festival at Detroit, can you help me for booking a flight ticket on 01/07?

ASSISTANT: May I know your airport codes?

USER: Arrival date is 01/09. Sure, My source code is SFO. Landing code is DTW.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: I found a flight with 1005 flight number and UA airline.

USER: Ok, please proceed.

ASSISTANT: To confirm your ticket may I know your name?

USER: I have already mentioned.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.