You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to visit Fern bank museum of natural history in Atlanta, ATL. Can you avail me to book a direct flight?

ASSISTANT: Yes, can you tell me your dates of travel?

USER: My travel dates are Feb 01 and Feb 03.

ASSISTANT: Could you share me your source airport code?

USER: My source is from Oakland, OAK.

ASSISTANT: Do you have any other specifications?

USER: I want to return in the evening time.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: Ok, not an issue.

ASSISTANT: Can I know your name?

USER: Sure, Mary Turner here.

ASSISTANT: Thank you for reaching us.

USER: Thank you for helping me.