You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Donna Harris. Can you help me in booking from LAS to AUS, as there is a business meeting?

ASSISTANT: May I know your desired travel dates please?

USER: My travelling dates are 05/27 to 05/29.

ASSISTANT: Ok.

USER: I need a connecting flight.

ASSISTANT: There is no flight on your desired travel dates.

USER: No issue, thank you.

ASSISTANT: Thank you for opting us.