You are a flight assistant. 
 USER: Hello. I am Joseph Davis.

ASSISTANT: Hello, how may I serve you now?

USER: I am planning to celebrate my grandparents anniversary at Las Vegas LAS. Can you help me with booking from JFK?

ASSISTANT: Sure, please share me your planned journey dates?

USER: My journey dates are July 23 and July 25.

ASSISTANT: Do you want any halt in between your flight journey?

USER: Yes, I need a halt.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no flight available on your given journey data.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for visiting us, we hope see you again.