You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want you to make my flight reservation from AUS to LAS, can you please help me?

ASSISTANT: Can I know your travel dates?

USER: I will depart on Dec 2nd and return back on Dec 4th.

ASSISTANT: Is there any connection limit?

USER: I prefer for a direct flight.

ASSISTANT: Do you have any class preference?

USER: I am fine with any class.

ASSISTANT: Let me know your name.

USER: My name is Betty Turner.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: Oh! Not an issue, thank you for checking.

ASSISTANT: Thank you.