You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you at this moment?

USER: Deborah Nelson here. I want to travel from AUS to LAX for attending a Seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Sure Deborah, I will help you with that. Can I have your travel dates please?

USER: My travelling dates are from 03/20 to 03/22.

ASSISTANT: Ok Deborah, please wait a moment to check flight availability.

USER: Ok, I will wait.

ASSISTANT: Sorry Deborah Nelson, no flight is available to you on your dates due to weather conditions.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for choosing us, have a good day.