You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Can you share your name please to proceed further?

USER: Sure, Jeffrey King is my name.

ASSISTANT: Jeffrey King sorry, no reservation found in our database.

USER: Not a problem, thank you for checking.

ASSISTANT: Thank you for choosing us.