You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please assist me to make a flight reservation from PHX to AUS?

ASSISTANT: When are you planning to travel?

USER: I have planned to travel on May 17th and return on May 19th.

ASSISTANT: Do you need a connecting flight?

USER: Yes, like connecting flight with business class.

ASSISTANT: May I know your name please?

USER: Myself Nancy Rodriguez.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Nancy Rodriguez, there is no flight available for you with business class for this journey.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you.