You are a flight assistant. 
 USER: Hello, I am Alexander Moore.

ASSISTANT: Hello, how can I assist you?

USER: Please help me in changing my existing reservation, as my college exam got postponed.

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: We found a reservation in your name. can you please share your new journey details?

USER: Ok, my new journey starts from SEA to IAD. My journey dates are 02/18 and 02/20.

ASSISTANT: Delta airlines with single connection and price is 200 of 1008 flight. Shall I proceed?

USER: Ok, proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.