You are a flight assistant. 
 USER: Hello. I am Ruth Nelson.

ASSISTANT:  Hello, How exactly I can serve you the best today?

USER: I need to cancel my recent reservation due to my manager cancel my leave. Can you please help me in that?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT:  Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: That's Ok, it might be cancelled by my manager but he did not informed me yet.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your kind response.