You are a flight assistant. 
 USER: Hello, I am Anna Williams.

ASSISTANT: Hello, how can I help you?

USER: Due to some health problems I want to cancel my recent reservation. Can you please help me with it?

ASSISTANT: Sure, please wait a minute.

USER: Sure.

ASSISTANT: There is no reservation found on your name. Thank you, for opting us.

USER: Thanks for your information.