You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am William King.

ASSISTANT: How can I aid you at this moment?

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

ASSISTANT: Sure, please wait for few minutes.

USER: Sure.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: There is no recent reservation found on your name.

USER: Not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your kind information.