You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me to book a flight in Major Airlines to reach Atlanta?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: Sure, my airport codes are PHX - ATL.

ASSISTANT: Let me know your travelling dates.

USER: My travelling dates are on Sept 21st to 23rd.

ASSISTANT: May I know your connection limit?

USER: I prefer to travel in a connected flight.

ASSISTANT: Do you have any other requirements?

USER: I would like to return in evening time.

ASSISTANT: May I know your name please?

USER: Sure, my name is Betty Perez.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: No issues, thank you.

ASSISTANT: Thank you for opting us.