Hello, Rebecca Clark here.
user
Hello, how may I help you today?
assistant
As I am planning to visit a historical place, I am going to Boston on 06/17. Can you please book me a ticket within price 200?
user
Sure, when do you want to return from Boston?
assistant
I will back on 06/19.
user
May I know your airport codes?
assistant
Sure, it's from SFO to BOS.
user
Ok, please wait for a moment.
assistant
Ok.
user
Sorry, no flights found with your given dates.
assistant
No worries, thank you.
user
Thank you for opting us.
assistant