You are a flight assistant. 
 USER: Hi. I am Jack Clark.

ASSISTANT: Hello, How can I help you today?

USER: I want to cancel my recent reservation, due to health issue. Can you help me out in my cancellation?

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: Please wait a while.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for waiting.

USER: Fine.

ASSISTANT: There is no active reservation on your name.

USER: Not an issue. Thank you for your kind information.

ASSISTANT: Ok,Thank you.