You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you help me to book a flight ticket from MSP to AUS?

ASSISTANT: Sure, may I know your name please?

USER: Ok, please book a flight ticket from my location on July 1st and return date is July 3rd.

ASSISTANT: Ok, may I know your travelling dates please?

USER: Ok, please check above. My name is Andrew Brown.

ASSISTANT: Do you need any stopover in your journey?

USER: Please book a connecting flight.

ASSISTANT: Do you have any other specifications please?

USER: Yes, I need a business class flight and the departure time I had planned is during morning.

ASSISTANT: Sorry Brown, there is no flight found as per your travelling details.

USER: That is ok, thank you for assisting me.

ASSISTANT: You are welcome.