You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I would like to cancel my reservation due to some health issues, can you please help me out with that?

ASSISTANT: Sure, I am here to assist you. May I know your name?

USER: Thank you for accepting my request. Myself Samuel Miller.

ASSISTANT: I found your reservation under your name. Shall I cancel it?

USER: Ok, please cancel it.

ASSISTANT: I have cancelled your reservation successfully.

USER: Thank you for your help.

ASSISTANT: You are welcome and have a nice day.