Hi.
user
Hello, how may I help you today?
assistant
I need to book a ticket from DCA to SFO. Could you book a ticket?
user
Sure, may I know your name please?
assistant
I am Elizabeth Edwards.
user
May I know on which dates your willing to travel?
assistant
Travel dates are from Apr, 6 to Apr, 8.
user
Is there any specific class preference for you?
assistant
I prefer business class ticket.
user
Do you have any other specifications please?
assistant
I would like to depart in the afternoon.
user
Sorry Edwards, there is no flight found as per your travelling details.
assistant
Thank you.
user
Thank you for reaching us.
assistant