You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Anna Davis, want to cancel my recent reservation due to personal issue. Please help me out with that.

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for reaching us.