You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Myself Alexander Davis. I want to travel from OAK to ORD.

ASSISTANT: Sure, can I know the travel dates please?

USER: My preferable dates are from 08/01 to 08/03.

ASSISTANT: Sorry Davis, there are no flights available as per your request.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you for helping me.