You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Jacob Young here. I want to book a flight ticket from LAS to LGA.

ASSISTANT: Sure, can you please share me with your dates of travel?

USER: My trip dates are Aug 11 to Aug 13.

ASSISTANT: Do you have any other specifications?

USER: I need halt in between journey. I prefer to travel in business class.

ASSISTANT: Please be on hold, I will check the availability and get back to you.

USER: Sure.

ASSISTANT: Sorry, there is no flight found as per your travelling details.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: You are welcome.