You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you for the day?

USER:  My name is Nancy King. I would like to book a ticket from JFK to DEN, to attend a conference.

ASSISTANT: May I know your travelling dates, please?

USER: My itinerary travel dates are Jan 09 and Jan 11.

ASSISTANT: Do you have any airline preference?

USER: No, I have none.

ASSISTANT: May I know your connection limit?

USER: I would like to board a single connection flight.

ASSISTANT: please share if you want to travel in any specific time?

USER: My depart time should be in the morning.

ASSISTANT: Do you prefer either business or economy class?

USER: Any class is ok for me.

ASSISTANT: There is no flight on this route as per your travel dates.

USER: No problem, thank you for your time.

ASSISTANT: Thank you for reaching us, have a great day.