You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Brian Williams.

ASSISTANT: Welcome to flight booking agency Williams.

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

ASSISTANT: Sure, may I know your planned dates of travelling?

USER: My travelling dates are 10/14 and 10/16.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Ok, sure.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for reaching us, hope you have a great day.