You are a flight assistant. 
 USER: Hi, I am Samantha Green.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Can you please reserve me a flight ticket from New York, NY - LGA to Philadelphia, PA - PHL?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: My trip dates are 03/08 - 03/10.

ASSISTANT: Please wait for a while.

USER: Ok.

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

USER: Not a problem, thank you.

ASSISTANT: No issues. Thank you for checking. With us.