You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Could you help me in booking a flight ticket from PHX to ATL?

ASSISTANT: Sure, may I know your trip dates please?

USER: I want to fly on Apr 04, return on Apr 06.

ASSISTANT: Do you have any other requirements?

USER: I want normal cost airline.

ASSISTANT: Ok, can I know your name please?

USER: My name is Gregory Hall.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I want economy class flight ticket. And I want a flight with one connection.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: Not an issue, thank you.

ASSISTANT: Most welcome.