You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you today?

USER: I would like to meet my childhood friend after a long time in San Francisco, so I would like to book a flight ticket. Can you help me with that?

ASSISTANT: Sure, may I know your travel dates please?

USER: Ok, my preferable dates are from June 06 to 08.

ASSISTANT: Please share your source airport code.

USER: My locations are from ATL to SFO.

ASSISTANT: Any requirements to be met?

USER: I need a direct flight.

ASSISTANT: Can you mention your name to proceed further?

USER: Sure, I am Raymond Miller.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Sorry, no flights found as per your requirement.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for contacting us.