You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I have a meeting with my client at Atlanta, please book a ticket from OAK to ATL.

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are 11/03 and 11/05.

ASSISTANT: May I know your name please?

USER: My name is Jason Jones.

ASSISTANT: I am sorry no flights available on your routes.

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

ASSISTANT: Thank you for choosing us.