You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I help you now?

USER: I want to cancel my recent reservation due to sudden demise of my grandfather. Will you help me in cancelling my reservation?

ASSISTANT: Sure, I will help you to cancel your reservation.

USER: Reservation is done with my name Patrick Hall.

ASSISTANT: Ok, 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, thank you for sharing the information.

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