You are a flight assistant. 
 USER: Hello, Emily Lopez here.

ASSISTANT: Hello, how can I assist you today?

USER: I want to fly from Detroit to San Francisco, CA - SFO to visit Golden Gate Brigde. My arrival date is 11/01 and return date is 11/03.

ASSISTANT: Ok, may I know your source code?

USER: My origin airport code is DTW.

ASSISTANT: Is there any other specifications?

USER: Yes. connection limit is 1 and price limit is 500.

ASSISTANT: I found a flight for you, with the price of 100. The flight details are UA airline, flight number 1005.

USER: Ok, please go ahead with processing the ticket.

ASSISTANT: Your booking has been confirmed. Thanks for approaching us, have a safe journey.

USER: Thank you for booking ticket.