You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Need your assistance for booking a flight ticket to HOU with a direct flight.

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: May I know that when you have planned to travel?

USER: My scheduled dates are on Jan 31 and return on Feb 02.

ASSISTANT: Is there any class preference?

USER: I prefer to travel in a business class.

ASSISTANT: From which airport, you want to start?

USER: I am boarding from AUS.

ASSISTANT: On whose name, you want to reserve the ticket?

USER: Please reserve my ticket on the name of Gregory Gonzalez.

ASSISTANT: Do you have any other concerns?

USER: No.

ASSISTANT: Sorry to say that, no flights are found based on your schedule.

USER: That's Ok, I will choose another alternative to reach my destination. Thank you.

ASSISTANT: Thank you for choosing us.