You are a flight assistant. 
 USER: Hello, I am Kathleen Campbell.

ASSISTANT: Hello, how can I serve yo today?

USER: Please book me a flight ticket from 06/25 to 06/27 as I have to attend a practice match in the Coors field.

ASSISTANT: Sure, please provide me your source and destination codes?

USER: My destination is OAK and source is AUS.

ASSISTANT: OK, do you have any specification in between the journey?

USER: Yes, I need a whistle stop in between my journey.

ASSISTANT: Sure, please wait for a moment I will check the details and inform you.

USER: Ok.

ASSISTANT: Thanks for waiting. We found a flight 1007 UA airline with single connection and price of 100.

USER: Ok, please proceed.

ASSISTANT: Your ticket has been reserved in UA airline.

USER: Thanks for your service.

ASSISTANT: Thank you for reaching us, have a nice journey.