You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I'm Susan King, I want to change my reservation due to health issue. Can you help me?

ASSISTANT: Sure, let me check the status and revert you.

USER: Ok, take your time.

ASSISTANT: There is no reservation found on the name you mentioned.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for approaching us.