You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you now?

USER: I am Andrew Garcia. I want to cancel my reservation due to sudden demise of grandmother. Can you help me?

ASSISTANT: Sure, I will help you with cancellation? Please wait for a moment, while I check for the reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, I found your reservation in our system data. Shall I cancel your reservation?

USER: Please proceed.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for visiting us.