You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Mark Thomas. I would like to book a flight ticket from SEA to SFO to meet my parents.

ASSISTANT: Sure, may I know your travel dates?

USER: 08/27 and 08/29 are my travelling dates.

ASSISTANT: At what time do you like to depart and return?

USER: I want to return in the afternoon.

ASSISTANT: We found a economy flight on your details with Hawaiian Airlines, flight number: 1020 and return time at 13:00PM. Shall I book this ticket?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you.