You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I address you?

USER: I am Mark Wilson. I am planning to book a ticket from ATL to ORD. Can you please help out?

ASSISTANT: Sure, on what dates are you planning to make your trip?

USER: I am planning to travel on Aug 30 and return back on Sept 01.

ASSISTANT: Is there any class preference?

USER: No, I am looking for a connecting flight.

ASSISTANT: At what time would you like to depart and return?

USER: My depart time is morning.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling with such a lay out.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for choosing us.