You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I need to cancel my recent reservation due to some issues. Can you help me in doing that?

ASSISTANT: Sure, may I know your name for the cancellation process?

USER: I am Brenda Johnson.

ASSISTANT: Wait a while, kindly.

USER: Sure, take your time.

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

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for opting us.