You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Could you please book a ticket from DFW to ORD as I want to attend a sports festival?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates are Dec 3rd and Dec 5th.

ASSISTANT: Thank you, may I know your class preferences?

USER: I prefer to travel in business class.

ASSISTANT: Ok, may I know your name for the documentation purpose?

USER: My name is George King.

ASSISTANT: Do you have any another preferences on this trip?

USER: I am looking for a flight with one connection.

ASSISTANT: Unfortunately, no flights available on your requirements.

USER: Not a problem, thank you for sharing the information.

ASSISTANT: Welcome, thank you for reaching us.