You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, please provide your itinerary dates.

USER: My travel dates are Dec 20 and Dec 22.

ASSISTANT: May I know your name?

USER: Ronald Baker.

ASSISTANT: Do you prefer to travel in direct flight?

USER:  I am willing to travel in a single connecting flight.

ASSISTANT: Do you prefer economy or business class?

USER: I prefer to travel in business class.

ASSISTANT: At what time do you want to depart and return?

USER: I am fine at any time.

ASSISTANT: Do you prefer any particular airlines?

USER: I am ok with any airlines.

ASSISTANT: Please give me a moment to check for a best flight.

USER: Ok.

ASSISTANT: Sorry Ronald Baker, no flights are available as per your requirements.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.