You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Helen Turner.

ASSISTANT: How can I assist you?

USER: Please book a flight ticket from JFK to CLT.

ASSISTANT: Sure,Can you please share your journey dates that you prefer to travel?

USER: My planned travel dates are July, 11 and July, 13.

ASSISTANT: Do you have any connection preference?

USER: I need single connection.

ASSISTANT: Do you have any class preference?

USER: I need to travel in business class only.

ASSISTANT: Do you have any other specifications on your trip?

USER: I want to return at afternoon time.

ASSISTANT: Please stand by.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry no flights found with your details.

USER: It's ok, thank you for checking.

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