You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Carolyn Nelson.

ASSISTANT: What help that I can assist you?

USER: I want to attend for my niece's marriage in Phoenix, so please book a flight ticket from AUS to PHX.

ASSISTANT: Sure, I can help you and may I know your airborne and recur planned travel dates?

USER: My trip dates are May 20 to May 22.

ASSISTANT: May I know your departure and arrival timings?

USER: I need a connecting flight which return in evening.

ASSISTANT: Which class do you prefer?

USER: I am ok with any class.

ASSISTANT: Please allow me a moment.

USER: Sure.

ASSISTANT: Based on your requirements, there is no flight found to your location to book a flight ticket for your journey.

USER: No issue, thank you.

ASSISTANT: You are most welcome and thank you for reaching us.