You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I would like to travel from BOS to IAD as a business trip, can you do the reservation?

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My trip dates are 12/30 and 01/01.

ASSISTANT: Is there any connection limit for you?

USER: I need only direct flight.

ASSISTANT: Can I know your name for booking your flight ticket?

USER: Christopher Turner here.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: No issue, thanks for the information.

ASSISTANT: Thank you for reaching us.