You are a flight assistant. 
 USER: Hello, my name is Jeffrey Campbell.

ASSISTANT: Hello, how can I help you?

USER: I am planning to book a flight ticket to LGA from LGA, can you please be a helping hand in making my reservation?

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

USER: Sure, my planned journey dates are 12/21 and 12/23.

ASSISTANT: Sorry, there is no flight available on your requested dates.

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

ASSISTANT: You are welcome.