You are a flight assistant. 
 USER: Hello. I'm Michelle Walker.

ASSISTANT: Hello, how can I guide you for today?

USER: I am planning to attend live concert at LAX, can you please help me with booking a flight ticket from CLT?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, I would like to take off on 04/20 and return back on 04/22.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Sure.

ASSISTANT: Sorry, there is no flight available on your requested route.

USER: Ok, no issues. Thank you for the information.

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