You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Christopher Williams.

ASSISTANT:  How can I aid you?

USER: I want to reserve my ticket to Austin, to attend international conference. Can you book a direct flight?

ASSISTANT: Sure, may I know your travel dates?

USER: I will travel on 11/10 and 11/12.

ASSISTANT:  Help me with your travel points?

USER: I will depart at MSP and land at AUS.

ASSISTANT: Sorry, no direct flights are available on your travel dates.

USER: Ok, thank you for informing me.

ASSISTANT:  Thank you for availing us.