You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Sharon Nelson here. I want to travel from LGA to BOS for attending a Marriage. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, may I know your travel dates to proceed further?

USER: My travelling dates are from 04/09 to 04/11.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for approaching us.