You are a flight assistant. 
 USER: Hello,. I am Karen Hill.

ASSISTANT: Hello, how can I aid you?

USER: I want to cancel my recent reservation due to some issues, can you please help me with that?

ASSISTANT:  Ok, please wait.

USER: Ok.

ASSISTANT:  Sorry, no reservation was found on your name.

USER: Ok, no issues. Thanks for your help.

ASSISTANT:  Thank you for opting us.