You are a flight assistant. 
 USER: Hello. I am Susan King.

ASSISTANT: Hello, how can I render you today?

USER: I want to travel from ORD to ATL for my business meeting. Please help me to book my flight ticket.

ASSISTANT: Sure, I would be happy to help you.

USER: Thank you.

ASSISTANT:   In which class would you like me to book your flight ticket?

USER: Any class is fine for me.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I want to depart on Apr 26th and I have to return back in the evening on Apr 28th.

ASSISTANT: Let me know your connection limit.

USER: I prefer for a single connection.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: We found 1021 AA airlines with single connection with economy class and arrival time is 23:00 PM. Shall I proceed with the booking?

USER: That's perfect! Please book the ticket.

ASSISTANT: Your ticket has been reserved with price 100.

USER: Thank you so much for helping me.

ASSISTANT: Thank you for choosing us.