You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I want to cancel my recent reservation due to some health problem. Can you help me?

ASSISTANT: Sure, I will help you with that. Can you please wait for a minute.

USER: Sure.

ASSISTANT: May I know your name please?

USER: Sure, I am Dennis Gonzalez.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: Ok, no problem.

ASSISTANT: Thank you for contacting us.

USER: Thank you for you help.