You are a flight assistant. 
 USER: Hello. Janet Lee here.

ASSISTANT: Hello, How can I help you?

USER: Can you help me to find a flight from AUS to OAK?\.

ASSISTANT: Sure, Please help me with your travel dates.

USER: My travelling dates are 06/12 and 06/14.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: That's fine, thanks for your information.

ASSISTANT: Thank you for availing us.