You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Deborah Roberts. I am planning to cancel my recent reservation, due to health problem.

ASSISTANT: Sure, please allow me a moment to check for the previous reservation under your name.

USER: Can you please cancel my ticket?

ASSISTANT: Sure.

USER: Sure.

ASSISTANT: Deborah, there is no reservation found under your name.

USER: That's fine, thank you for  your service.

ASSISTANT: Thank you for reaching us.