You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me in booking a flight ticket to DCA from IAD in a business class flight?

ASSISTANT: Sure, I am here to help you out. may I know your travelling dates please?

USER: Thank you for considering my request, my travelling dates are Nov 12 and Nov 14.

ASSISTANT: Can you please share your connection limit?

USER: I want a flight with maximum connection of 1.

ASSISTANT: May I know your name please? Do you have any other specification?

USER: Sure, my name is Sharon Hernandez and do not have any other requirements.

ASSISTANT: Sharon Hernandez , there are no flights available in your route with your preferences?

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for choosing us.