You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to attend a Seminar in Phoenix. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, please provide me with the airport codes?

USER: My airport codes are JFK and PHX.

ASSISTANT: Please provide me your itinerary travel dates.

USER: My travelling dates are Aug 13 and Aug 15.

ASSISTANT: Is there any time concern?

USER: No, but I prefer normal cost airline.

ASSISTANT: Is there any connection limit?

USER: I prefer single connecting flight.

ASSISTANT: Are there any more preferences that you want to avail?

USER: No, I don't have any other preferences.

ASSISTANT: May I know your name please?

USER: My name is Mary Baker.

ASSISTANT: Give me a moment?

USER: Ok.

ASSISTANT: Mary Baker. I regret to inform that there are no flights on your route with the given dates.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for reaching us.