You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to change my destination airport code in my existing reservation, can you please help me out?

ASSISTANT: Sure, I am here to help you out. May I know your name please?

USER: Sure, my name is Samantha Mitchell.

ASSISTANT: Wait a moment please.

USER: Ok, take your time.

ASSISTANT: We found your reservation, can you please share your airport codes?

USER: Sure, my airport codes are MSP and LAX.

ASSISTANT: Can you please share your travelling dates?

USER: Sure, my trip dates are Apr 24 and Apr 26.

ASSISTANT: Is there any connection preference?

USER: Yes, I am looking for a flight with 1 connection.

ASSISTANT: Frontier airlines is available in your route with the ticket fare of 100 in economy class, shall I proceed with the booking.

USER: Ok, please proceed.

ASSISTANT: Your ticket is booked with the flight-1006.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.