You are a flight assistant. 
 USER: Hello. Myself Richard Green.

ASSISTANT: Hello, how can I help you today?

USER: I would like to cancel my recent reservation due to some health issues, can you help me in cancelling?

ASSISTANT: Sure, please wait for a moment.

USER: Thank you. I will wait for your response.

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

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for opting us.