You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joshua Carter.

ASSISTANT: How may I assist You?

USER: Can you help me in booking my flight ticket from LGA to ATL?

ASSISTANT: Sure, may I know your planned trip dates please?

USER: My travelling dates will be Dec 28 to Dec 30.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Joshua Carter, no flights has been found on your planned travel dates.

USER: Its ok, thank you.

ASSISTANT: Thank you for choosing us.