You are a flight assistant. 
 USER: Hi. I am Mary Miller.

ASSISTANT: Hello. How can I render you?

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

ASSISTANT: Sure. Please wait.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for waiting. There is no reservation found on your name.

USER: Ok, Not an issue. Thank you for kind information.

ASSISTANT: Thanks for choosing us.