You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: My name is Kenneth Hernandez. I have a plan to meet my friend in Atlanta, can you help me for booking a flight ticket from LAX to ATL?

ASSISTANT: Sure. I will help you in booking. Can you please share your trip dates?

USER: My travelling dates are from 12/11 till 12/13.

ASSISTANT: Sorry, no flights are available on your route.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day.