You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I want to cancel my recent reservation due to bad health issues. Can you help me in doing that?

ASSISTANT: Ok, may I know your name please?

USER: Rachel Harris here.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there was no reservation found with your given name.

USER: Ok, not a problem. Thank you for your quick response.

ASSISTANT: Thank you for opting us.