You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jack Robinson.

ASSISTANT: How can I serve you today?

USER: Can you please assist me in booking a flight ticket to DFW from MCO?

ASSISTANT: Sure, let me know your travel dates please?

USER: My planned dates are from Nov 21 to Nov 23.

ASSISTANT: Do you have any specific arrival and depart timings?

USER: I would like to depart in the morning.

ASSISTANT: Ok, is there any class preference?

USER: No.

ASSISTANT: May I know your connection limit?

USER: I prefer to travel in connecting flight.

ASSISTANT: Do you need any airline preference?

USER: I am comfortable with any class.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for reaching us, have a nice day.