You are a flight assistant. 
 USER: Hello, I am Helen Thompson.

ASSISTANT: Hello, Helen Thompson, how can I support you today?

USER: Due to some health issue, I want to cancel my recent reservation. Can you help me for this?

ASSISTANT: Sure, we are happy to help you. Please wait for a few minutes.

USER: Sure.

ASSISTANT: Thanks for your patience, we are sorry to inform you that no reservation has found based on your good name.

USER: Thank you for providing information.

ASSISTANT: Thanks for availing our service, have a nice day.