You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: I would like to travel from DTW to MCO. Can you please help me in ticket booking?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable departure and return dates of travelling?

USER: My travel dates are from 10/21 to 10/23.

ASSISTANT: May I know your name to book the flight ticket?

USER: Myself Virginia Scott.

ASSISTANT: Do you have any connection limit?

USER: I want a single connection.

ASSISTANT: Is there any other requirements do you want?

USER: No.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: We regret to inform you that, there are no flights available for your request with your requested dates of travelling.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us, have a great day.