You are a flight assistant. 
 USER: Hello, I am Gary Edwards.

ASSISTANT: Hello, how may I help you at this moment?

USER: Can you please book a ticket from SEA to LAX?

ASSISTANT: Can I have your travelling dates?

USER: I would like to go on 12/22 and return back on 12/24.

ASSISTANT: There is a flight available with Delta airlines, shall I proceed?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1012.

USER: Thank you.

ASSISTANT: Thank you for reaching us.

USER: Welcome.