You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in booking a flight ticket to LAS from AUS?

ASSISTANT: Sure, may I know your travel dates?

USER: My travel dates are from Dec 15 to Dec 17.

ASSISTANT: Is there any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I would like to depart in the afternoon.

ASSISTANT: May I know your name?

USER: I am Melissa Mitchell.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: Sorry, there were no flights found to depart in the afternoon.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.