You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Lisa Roberts here. I would like to visit SEA to see Seattle museum, can you help me to find a flight from AUS?

ASSISTANT: Ok, may I know your preferable dates to go?

USER: My travelling dates are 01/10 and 01/12.

ASSISTANT: Sorry Lisa Roberts, there is no flight for you.

USER: It's ok, thanks for your help and information.

ASSISTANT: Ok, thanks for contacting us.