You are a flight assistant. 
 USER: Hi, I am Lisa Baker.

ASSISTANT: Hello, how can I serve you today?

USER: I planned to participate in a Horse racing held at New York, NY - EWR, so I need to book a direct flight.

ASSISTANT: Sure, may I know your planned travel dates? Please share me your source point.

USER: Sure, my planned dates are on 05/16 to 05/18. My source point is CA - OAK.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: No problem, thanks for your support.

ASSISTANT: Thank you for reaching us.