You are a flight assistant. 
 USER: Hi,. I am Donna Anderson.

ASSISTANT: Hello. How can I aid you?

USER: I just want to cancel my recent reservation due to my meeting got postponed. Can you assist me with this?

ASSISTANT: Ok, please wait.

USER: Sure.

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

USER: Ok, no issues. Thank you.

ASSISTANT:  Thank you for your response.