You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Emma Thomas. I want to book a ticket from BOS to OAK to attend seminar, can you help me in booking?

ASSISTANT: Sure, I am glad to help you in booking. May I know your travel dates to proceed further?

USER: I am departing on 02/22 and return on 02/24.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.