You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Owing to an emergency so I had to request for this change reservation. Can you please help me to change an existing reservation?

ASSISTANT: Sure, can you help me with your name?

USER: My name is Sarah Smith.

ASSISTANT: Your reservation is  found, can you help me with your new journey dates?

USER: Sure, my journey dates are from 03/01 to 03/03.

ASSISTANT: May I know your airport codes?

USER: My airport codes are from Oakland, CA-OAK to Phoenix, AZ-PHX.

ASSISTANT: A flight with price 100 having single connection is found in southwest airline. Shall I proceed with it?

USER: Ok, you can proceed for booking.

ASSISTANT: Your ticket is confirmed in flight number 1001.

USER: Thanks for your kind service.

ASSISTANT: Thank you for reaching us.