You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I aid you?

USER: I would like to attend a workshop at Atlanta, please help me in booking a ticket from OAK to ATL.

ASSISTANT: Sure, may I know your travelling dates?

USER: My planned travel dates are on Feb 11 and Feb 13.

ASSISTANT: Do you have any connection limit?

USER: I am fine with any connection.

ASSISTANT: Are there any preferences?

USER: I prefer business class for my trip.

ASSISTANT: May I know your name?

USER: My name is Carol Thomas.

ASSISTANT: Sorry, there are no flights found with your details.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you.