You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am William Jackson.

ASSISTANT: How may I help you?

USER: Can you please reserve me a flight ticket from DEN to MCO to attend a film festival?

ASSISTANT: Sure, I am here to help you with the ticket booking. Can you please tell me your airlines preference?

USER: I am ok with any airline.

ASSISTANT: Can you please share your travel dates?

USER: I would like to depart on Feb 10 and return on Feb 12.

ASSISTANT: Ok, which class do you prefer to travel?

USER: I am comfortable with any class.

ASSISTANT: Ok, do you have any other preferences?

USER: I need a direct flight.

ASSISTANT: Ok, please give me a minute.

USER: Ok, make sure that I have to return in the afternoon time.

ASSISTANT: Sorry to inform you that, there are no flights found in this route on the dates you have given.

USER: It's ok, no problem. Thank you for your response.

ASSISTANT: You are most welcome. Thank you for choosing us.