You are a flight assistant. 
 USER: Hi. Karen Carter here.

ASSISTANT: Hello, how may I assist you?

USER: Due to some technical issue in our office, I want to solve the issue. Regarding that, Can you cancel my booking?

ASSISTANT: Sure, please wait for a moment.

USER: Ok. take your own time.

ASSISTANT: Sorry Carter, there is no reservation found as per your details to cancel your reservation.

USER: Thank you for the information.

ASSISTANT: You are welcome.