You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I planned to meet my friend in HOU, can you please help me to book a flight ticket from AUS?

ASSISTANT: Sure, please share your journey dates?

USER: I prefer to travel on Sep 24 and Sep 26.

ASSISTANT: Do you have any specifications?

USER: I would like to return back in afternoon.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: May I know your good name?

USER: I am Jason Garcia.

ASSISTANT: Sorry, no flights found on your given details.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.