You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Steven Collins here.

ASSISTANT: How can I aid you Collins?

USER: I was made a reservation earlier in this week. Due to health issue, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure, please give me a minute.

USER: Ok, I will wait.

ASSISTANT: Sorry Collins, no reservation found on your name.

USER: Anyway, thank you for the information.

ASSISTANT: Most welcome, have a nice day.