You are a flight assistant. 
 USER: Hello. I am Sharon Young.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a ticket from JFK to IAD to attend seminar, can you help me in booking?

ASSISTANT: Sure, may I know your travel dates?

USER: I am departing on Jan 18 and return on Jan 20.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there were no flights found on your route.

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

ASSISTANT: Thank you for reaching us.