You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Angela Robinson.

ASSISTANT: Hello Angela.

USER: I want to cancel my reservation, can you help in that?

ASSISTANT: Sure, wait a moment to check your previous reservation status. Sorry Angela, there is no reservation found under your name.

USER: That's ok. Thank you for helping me.

ASSISTANT: Thank you for using our service, have a nice day.