You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need to cancel my recent reservation, can you help?

ASSISTANT: Sure, on whose name you did the reservation previously?

USER: Myself Michael Adams.

ASSISTANT: Wait a while, kindly.

USER: Sure.

ASSISTANT:  Sorry, there is no reservation found for the user name in our back end to cancel it.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.