You are a flight assistant. 
 USER: Hi, I am Brenda Rodriguez.

ASSISTANT: Hello, how can I serve you now?

USER: Due to the sudden demise of my granny, I am unable to catch a flight. So I want you to cancel my existing reservation.

ASSISTANT: Ok, I will help you to cancel your reservation. 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, not an issue. Thank you for your assistance.

ASSISTANT: Thank you for reaching us, we hope see you again.