You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Angela Allen here.

ASSISTANT: How can I assist you?

USER: I want to cancel my reservation due to health issue, can you help me?

ASSISTANT: Sure Allen, please wait a moment.

USER: Ok, take your time.

ASSISTANT: Sorry to say that, there is no reservation found on your name.

USER: Ok, thank you so much for your help.

ASSISTANT: Thank you for approaching us.