You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I need to travel LGA and ORD, can you reserve flight ticket?

ASSISTANT: Sure, let me know your travel dates?

USER: My travelling dates are Mar,16 and Mar,18.

ASSISTANT: Do you have any connection limit?

USER: I prefer single connecting flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: Myself Andrew Wilson.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey locations.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.