You are a flight assistant. 
 USER: Hello. I am Betty Jones.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I need a direct flight to Oakland, OAK.

ASSISTANT: Ok.

USER: Can you help me in booking a flight ticket from Atlanta, ATL?

ASSISTANT: Please provide your preferred dates of travel?

USER: My travelling dates are from 11/22 to 11/24.

ASSISTANT: Do you have any price limit?

USER: Make sure that price limit is 1000.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there is no direct flight available from your source.

USER: Ok, No problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for the information.