Hello, I am Ronald Allen.
user
Hello, how may I aid you today?
assistant
 Will you help me to book a flight ticket from BOS to SEA to meet my school friend after a long time?
user
Sure, we are here to help you. May I know when did you planned to travel?
assistant
My depart is on 06/30 and return on 07/02.
user
Do you have any price limit?
assistant
My price limit is 200.
user
Ok, please wait a moment.
assistant
OK.
user
Sorry to say that there were no flights found on your preferred dates.
assistant
No problem, thank you for he information.
user
Thank you for choosing us.
assistant