You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you please help me to book a connecting flight from PHX to AUS?

ASSISTANT: Sure, I am here to help you. Can I know your travelling dates to search for the flight?

USER: Sure, I want to start my journey on Aug 26 and need to end it on Aug 28.

ASSISTANT: May I know your name?

USER: I am Thomas Baker.

ASSISTANT: Are you fine with connecting flight?

USER: Yes.

ASSISTANT: Do you have any other requirements?

USER: I prefer an business class to travel.

ASSISTANT: Sorry to say, no flight is available for you as per your requests.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.