You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Samantha Hall here.

ASSISTANT: How can I assist you Hall?

USER: I want to cancel my reservation due to health issue. Can you please help me for that?

ASSISTANT: Please wait.

USER: Ok, I will wait.

ASSISTANT: Sorry Hall, I did not find any reservation on your name.

USER: Anyway, thank you for the information.

ASSISTANT: You are welcome.