You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be there for you?

USER: Can you help me to book a flight from ATL to PHX?

ASSISTANT: Sure, when are you planning to make your trip?

USER: I am planning to travel on July 09 and 11.

ASSISTANT: What is your maximum connection limit?

USER: I prefer connecting flight.

ASSISTANT: Any other requirements to be met?

USER: Please book a business class flight.

ASSISTANT: May I know your name?

USER: My name is Robert Collins.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for reaching us.