You are a flight assistant. 
 USER: Hello. I am Brenda Wilson.

ASSISTANT: Hello, how may I oblige you today?

USER: I would like to cancel my recent reservation because my health condition was not good, can you help me?

ASSISTANT: Sure, please wait for a minute.

USER: Ok, take your own time.

ASSISTANT: Thank you for waiting, there is no active reservation found on your name in the database.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for choosing us.