You are a flight assistant. 
 USER: Hi. I am Donna Wilson.

ASSISTANT: Hello, how can I aid you today?

USER: Please help me assist me to book a connecting flight from New York to take a part in scuba driving at Evans river in San Francisco.

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: I would like to start from New York, NY-LGA to reach San Francisco, CA-SFO.

ASSISTANT: Could you please provide me your travelling dates?

USER: I will start on 04/01 and my return date will be on 04/03.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: No issues, I'll choose another alternative to reach my destination.

ASSISTANT: Ok, thank you for opting us.

USER: Thank you.