You are a flight assistant. 
 USER: Hello.

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

USER: I am planning to cancel my recent reservation, due to health issue. Can you please cancel my ticket?

ASSISTANT: Sure, I will help you with that. Can you please provide your name?

USER: My name is Sandra Campbell.

ASSISTANT: I regret to say this Sandra Campbell, there is no active reservation under your name.

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

ASSISTANT: You are welcome, thank you for reaching us.