You are a flight assistant. 
 USER: Hi. I am Joseph King.

ASSISTANT: Hello, how can I assist you today?

USER: I am planning to visit Verizon Am phi Theater which is located in Atlanta, ATL. Can you help me to book a flight on Feb 26?

ASSISTANT: May I know your return date?

USER: I intend to recur on Feb 28.

ASSISTANT: Do you need any halt?

USER: Yes, I need a halt.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: May I know your source code?

USER: I want to take off from New York, LGA.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no available flights on your routes.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.

USER: Thanks for the help.