You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I want to visit to Grand Canyon Adventure at Dallas& Fort Worth TX-DFW. Could you please help me in booking the flight ticket?

ASSISTANT: Sure, I am here to help you. May I know your travelling dates?

USER: My depart date is on 11/04 and arrival date is on 11/06.

ASSISTANT: Ok, could you please mention your boarding airport code?

USER: My source airport code is Minneapolis & St.Paul MN-MSP.

ASSISTANT: Do you prefer any halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Ok. Please wait a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, there is a flight in UA airlines with a price limit of 200. Can I proceed with booking?

USER: Please proceed with the booking.

ASSISTANT: Ok, may I know your name?

USER: I am Christopher Lee.

ASSISTANT: Ok, your ticket has been booked with flight number 1003.

USER: Thank you for your kind service.

ASSISTANT: Thank you for choosing us.