You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you?

USER: I would like to cancel my reservation because of my health issue, can you help me?

ASSISTANT: Sure, just wait a while, I will check and inform you.

USER: Sure.

ASSISTANT: For documentation purpose may I know your name.

USER: Sure, myself Joshua Wilson.

ASSISTANT: There is no reservation found on your name, Wilson.

USER: Ok, thanks for checking.

ASSISTANT: Do you want to know anything else.

USER: No, thanks for helping me.

ASSISTANT: Thanks for contacting us. Have a nice day.