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

ASSISTANT: Hello, how may I aid you today?

USER: Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you please help me in changing the reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, we have found a reservation on your name. Kindly mention your new airport codes to proceed?

USER: My new airport codes are SEA to PHX?

ASSISTANT: May I know when you are willing to travel?

USER: I am willing to travel on Sept 22 and return on Sept 24.

ASSISTANT: Do you have any restrictions to be met?

USER: I need a halt.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, unfortunately we have couple of connections on that route. Shall I proceed?

USER: Do not proceed to book.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thank you for availing us.