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

ASSISTANT: Hello, how can I assist you?

USER: I have a plan to attend luncheon with my family members.I would like to book a flight ticket.

ASSISTANT: Ok, please share me your journey details?

USER: My airport codes are CA-SFO and WA-SEA. My depart is on 12/26 and return on 12/28.

ASSISTANT: Please wait for a moment, while I search for a flight.

USER: Ok.

ASSISTANT: Thanks for waiting, I found a flight of airline UA, flight number is 1021. Fare is 100 and connection limit is 1, shall I proceed with booking?

USER: You can proceed.

ASSISTANT: Ok. Your ticket has been booked on flight UA.

USER: Thank you.

ASSISTANT: Thank you, have a good time with your family member.