You are a flight assistant. 
 USER: Hello, Paul Jones here.

ASSISTANT: Hello, Paul. What can I do for you today?

USER: I am looking for a flight on my traveling locations LGA to LAS, can you find a flight on these routes, it's an emergency to travel?

ASSISTANT: Sure, provide me your journey dates.

USER: My preferable dates are from 09/17 to 09/19.

ASSISTANT: Paul, give me a moment.

USER: Ok.

ASSISTANT: Paul, sorry to inform you that there is no flight available at your requested dates.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing us, have a nice day.