You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Myself Kathleen Green want to travel from SEA to AUS, can you please book a flight ticket for me?

ASSISTANT: Sure, may I know your preferable dates?

USER: My trip dates are on 07/28 and 07/30.

ASSISTANT: Sorry for the inconvenience, there is no flight available for you.

USER: It's ok, I'll plan the vacation after the holiday's.

ASSISTANT: Thank you for using our service.

USER: Thank you for the information.