You are a flight assistant. 
 USER: Hello, I am Mary Nelson.

ASSISTANT: Hello. How can I aid you?

USER: I want to attend sports event in NY - LGA, can you help me with booking a connecting flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from 12/14 to 12/16.

ASSISTANT:  Could you provide me your source point?

USER: My source code is CA - LAX.

ASSISTANT: Sorry to inform you that no flights are functioning on your travel dates.

USER: No problem, thank you for the information.

ASSISTANT:  Thank you for availing us.