You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I want to cancel my recent reservation due to sudden change in my family trip dates. Can you help me in doing that?

ASSISTANT: Sure, I will help you with cancellation. May I know your good name?

USER: I am Nicole Brown.

ASSISTANT: Please wait for a moment, while I check for the reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: Ok. no issues. Thank you for your response.

ASSISTANT: Thank you for visiting us, have a nice day ahead.