You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Gregory Lee. I would like to book a flight ticket from SFO to SEA. Could you help?

ASSISTANT: Sure, please share your travel dates.

USER: I am starting on 12/30 and return back on 01/01.

ASSISTANT: I found a flight 1003 of Spirit airlines matches with your preferences, can I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is confirmed. Happy journey.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.