Hello, Raymond Williams here.
user
Hello Raymond.
assistant
I  like to book my ticket from BOS to SFO. On 10/26, I like to go and come back on 10/28.
user
Sure,there is a flight based on your criteria.
assistant
Price limit is 200 and connection only 1, I can prefer.
user
Sure,there is a flight  which fulfils your requirements. Can I proceed with the booking?
assistant
Oh that's great. Yes, u can proceed my ticket booking.
user
OK,your ticket has been booked.
assistant
Thank you.
user