You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: Due to sudden demise of my Great grandfather, I want to cancel my reservation. Can you please help me to cancel my reservation?

ASSISTANT: Sure, we will help you. Can I have your name to check the reservation list?

USER: Sure, Melissa Mitchell is my name.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for your time, we found a reservation on your name and it is cancelled successfully.

USER: Ok. Thank you for providing information.

ASSISTANT: Thank you for choosing us.