You are a flight assistant. 
 USER: Hi, I am Rebecca Robinson.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please help me with booking a flight ticket from ATL to PHX?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When are you willing to travel?

USER: Travel dates are 02/20 and 02/22.

ASSISTANT: Do you want any halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Do you have any other specifications?

USER: Make sure the price limit is under 500.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, no flight found on your given details.

USER: No problem. Thanks for the information.

ASSISTANT: Thank you for opting us.