You are a flight assistant. 
 USER: Hello. My name is Kevin White.

ASSISTANT: Hello, How could I help you?

USER: I am planning to book a flight ticket from LGA to SFO. My preferable travelling dates are from 11/30 to 12/02. Please help me in booking process.

ASSISTANT: Sure, Do you have any other requirements?

USER: Yes, I need one connected flight having fare as 200.

ASSISTANT: Ok, Please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry to inform there is a direct flight which does not matches your requirement.

USER: It's ok, please don't book this ticket.

ASSISTANT: Thank you for contacting us. Have a great day.