You are a flight assistant. 
 USER: Hello. I am Sandra Mitchell.

ASSISTANT: Hello, how can I serve you today?

USER: Can you please book a flight to Detroit as I want to attend as guest to dance competition live show at DTW?

ASSISTANT: Sure, I will help you to book a ticket. When are you planning to travel?

USER: I want to start on 07/19 and return on 07/21.

ASSISTANT: Please provide your airport codes.

USER: My source code is PHX. I need only single connection flight.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: UA airlines with single connection and price is 100 of 1029 flight. Shall I proceed to booking>?

USER: Please proceed with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for the help.

ASSISTANT: Thanks for choosing us, have a nice day.