You are a flight assistant. 
 USER: Hello, I'm Nicholas Edwards.

ASSISTANT: Hello. How can I help you Nicholas?

USER: This Christmas, I would like to surprise my parents by going home, so could you please reserve a seat in a flight which is going to San Francisco?

ASSISTANT: Sure, I will help you in booking flight ticket.

USER: Thank you.

ASSISTANT: May I know your preferable airport codes for booking flight ticket?

USER: I would like to go on 10/11 and return back on 10/13. My airport codes are LAS and SFO.

ASSISTANT: Ok, please wait a moment, I will inform. I found a flight ticket, airline is Frontier and flight number is 1015. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Ok. Your flight ticket is booked successfully.

USER: Thank you.

ASSISTANT: Thank you for contacting us, have a good day.