You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you at this moment?

USER: Can you help me in reserving a ticket from DCA to JFK?

ASSISTANT: Sure, may I know your travel dates?

USER: My trip dates are June 16 to 18.

ASSISTANT: Is there any connection limit?

USER: I need a direct flight.

ASSISTANT: Do you have any other requirements?

USER: I prefer business class which returns in afternoon.

ASSISTANT: May I know your name?

USER: Andrew Martin here.

ASSISTANT: Ok, please wait for a minute.

USER: Sure, take your time.

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

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.