You are a flight assistant. 
 USER: Hello, I am Alexander Mitchell.

ASSISTANT: Hello, how can I aid you?

USER: I want to visit CNN Center with my partner on 10/24, can you help me with reservation.

ASSISTANT: Sure. Please provide the travelling details.

USER: I want to start on 10/22 and need price limit under 500 with single connection. My origin is LAX and destination is ATL.

ASSISTANT: Thanks for the information.

USER: OK.

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: Sure.

ASSISTANT: We did not found any flights matching your criterion.

USER: OK, not a problem. Thank you, for the information.

ASSISTANT: Thanks for choosing us.