You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, What kind of help are you expecting from our side?

USER: I need to book a flight ticket from AUS to HOU, can you help me in booking a flight ticket?

ASSISTANT: Help me with your journey dates, so that it will be easier to move further in booking. Sure, I am gleeful to assist you.

USER: Sure, my journey dates are May 31 and Jun 2.

ASSISTANT: Are you okay with connecting flight or you need a direct flight?

USER: I prefer maximum one connection.

ASSISTANT: Would you like to avail any benefits for the comfort of your journey?

USER: I would prefer return time at afternoon.

ASSISTANT: Can I have your name please?

USER: Sure, Donna Johnson here.

ASSISTANT: Ok, please wait a moment I'll search best flight for you.

USER: Sure.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

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

ASSISTANT: Thank you for approaching us.