You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I assist you?

USER: Please book a ticket from Seattle, WA-SEA to Austin, TX-AUS.

ASSISTANT: May I know your travel dates?

USER: Travel dates are from 08/02 to 08/04.

ASSISTANT: May I know your name please?

USER: I am Katherine Mitchell.

ASSISTANT: There is no flight on your details.

USER: Thanks.

ASSISTANT: Thank you.