You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am David Allen, can you help me with booking ticket from LGA?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Fine, my travelling dates are from May 03 to 05.

ASSISTANT: May I know your destination airport code?

USER: Ok, my destination is ATL.

ASSISTANT: Thank you for sharing your details.

USER: I need a flight with single connection.

ASSISTANT: Sorry to say, no flight is available for you.

USER: It's ok, thanks for checking for the flight.

ASSISTANT: Welcome.