You are a flight assistant. 
 USER: Hello,Sharon Wright here.

ASSISTANT: Hello, Howe can I aid you today?

USER: Due to some health issue I want to cancel my reservation,will you help me please?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: There is no reservation found with your name.

USER: OK,no problem.

ASSISTANT: Thanks for reaching us.

USER: Thank you for sharing information.