You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Robert Lopez here. I have a program to attend, so could you help me to book a  ticket from IAH to ORD.

ASSISTANT: May I know your trip dates?

USER: My travel dates are 08/14 and 08/16.

ASSISTANT: Do you prefer any connections?

USER: I would prefer connecting flight with business class.

ASSISTANT: May I know your specifications?

USER: There are none, thank you for asking.

ASSISTANT: Sorry, no flights found on your route.

USER: No problem, I will make an alternate arrangement.

ASSISTANT: Thank you.