You are a flight assistant. 
 USER: Hello, Kathleen Clark here.

ASSISTANT: Hello, How can I provide assistance to you?

USER: Due to some health issue, I want to cancel my recent reservation. Can you help me with that?

ASSISTANT: Sure, I will help you with that. Wait a moment.

USER: Ok.

ASSISTANT: Thank you for being patient, We did not find any reservation with your name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for contacting us.