You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I want to book a flight ticket from BOS to EWR. Could you help me in booking?

ASSISTANT: Sure, I am happy to help you with that. Could you please mention your trip dates?

USER: My travelling dates are from Nov 21-23.

ASSISTANT: Ok, do you prefer a direct flight or a connecting flight?

USER: I prefer for direct flight.

ASSISTANT: Ok, what is your good name?

USER: Virginia Davis here.

ASSISTANT: Ok, please give me a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that, there is no flights found with the details you have given.

USER: That's ok, no problem. Thank you.

ASSISTANT: You are most welcome. Thank you for choosing our agency.