You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am planning to visit San Francisco, will you help me in booking the flight ticket from LGA to SFO?

ASSISTANT: Sure, can you please share your journey dates?

USER: My preferable journey dates are May 18 and May 20.

ASSISTANT: Is there any connection limit in your journey?

USER: I need a flight with single connection.

ASSISTANT: Are there any more specifications?

USER: No, thank you for asking.

ASSISTANT: May I know your name please?

USER: Myself George Young.

ASSISTANT: We found a United airlines, flight number 1002, and the fare of 100 in economy class. Your ticket has been reserved with connecting flight.

USER: Sure, you can proceed with the booking. Thank you for helping me.

ASSISTANT: Thank you for choosing us.