You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you help me in booking a flight ticket from MCO to DEN?

ASSISTANT: Sure, I am here to help you for this. When are you planning  to leave?

USER: My trip dates are in Jan from 14th to 16th.

ASSISTANT: Do you prefer any airline?

USER: I prefer normal cost airlines.

ASSISTANT: At what time are you planning to depart and return?

USER: I will fly at any time.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I prefer a single connecting flight.

ASSISTANT: Please wait for a while.

USER: I want a business class ticket. Sure.

ASSISTANT: For proceeding further. May I know your name please?

USER: Kathleen Turner here.

ASSISTANT: Sorry to inform, no flights are found with your criteria.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you very much for contacting our agency.