You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Deborah Lopez.

ASSISTANT: How can I abet you today?

USER: I want to book a ticket from BOS to CLT to attend workshop, can you help me in booking?

ASSISTANT: Sure, I am here to help you in booking. Can I have your trip dates please?

USER: I am departing on 09/09 and return on 09/11.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, no flights are available on your route.

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

ASSISTANT: Welcome, have a nice day. Thank you for opting us.