You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Paul Williams.

ASSISTANT: How can I help you?

USER: I need to book a flight from AUS to MSP, can you please help me to book a flight ticket?

ASSISTANT: Sure, I will help you. Could you please provide your planned journey dates?

USER: Sure, my travelling dates are Jan 10 and Feb 01.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: In which class, would you like me to book your flight ticket?

USER: I am comfortable to travel in any class.

ASSISTANT: Do you have any other preferences?

USER: My departing time is afternoon.

ASSISTANT: Please, re verify your journey dates and let me know.

USER: My travelling dates are Jan 30 and Feb 01.

ASSISTANT: Give me a minute, I will let you know the flight availability.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for your time. I am sorry to inform you that, there were no flights available that matches your requirements.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.