You are a flight assistant. 
 USER: Hi, I am Brandon Brown.

ASSISTANT: Hello, how can I help you?

USER: I want to visit Verizon Amphi Theater to watch a live cultural event, can you please help me to book a ticket within price of 500?

ASSISTANT: Ok, I am glad to help you. May I know your trip dates please.

USER: My trip dates are from 11/14 to 11/16.

ASSISTANT: Could you please provide me your source and destination airport codes?

USER: My source and destination airport codes are Phoenix, AZ-PHX and Atlanta, GA-ATL.

ASSISTANT: Do you have any other specifications?

USER: I want a single connection.

ASSISTANT: Unfortunately, there is no flight found on your given details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us.