You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Stephen Thompson want to visit SFO, can you book a ticket from SEA?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Sure, my travelling dates will be 11/20 and 11/22.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Flight 1016 with price 100 is available for you, can I proceed?

USER: Ok, proceed with my booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Welcome.