You are a flight assistant. 
 USER: Hello, Stephen Perez here.

ASSISTANT: Hello,how may I serve you?

USER: I want to attend a live concert in Dallas & Fort worth, Can you book a ticket with price 200?

ASSISTANT: Sure, may I know your airport codes?

USER: My destination airport code is TX - DFW. My source is Phoenix, AZ - PHX.

ASSISTANT: Please share your travelling dates.

USER: My trip dates are 04/26 and 04/28.

ASSISTANT: Ok, please give me a minute to check for the flight availability.

USER: Sure.

ASSISTANT: Thanks for your time, we found 1024 flight of Delta airline matching your requirements. Price is 100 and having one connection.

USER: Ok, you can proceed for booking.

ASSISTANT: Your ticket was booked.

USER: Thank you for your service.

ASSISTANT: Thanks for contacting us.