Hello, Emily Smith here.
user
Hello. How may I help you out?
assistant
 I need you to book a flight ticket from BOS to OAK.
user
Sure, I will help you in booking the ticket. May I know your travelling dates please?
assistant
July 6 and July 8 are my planned trip dates.
user
Sorry, there are no flights found.
assistant
Oh! Thank you for your help.
user
Thank you for reaching us.
assistant