You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,how can I aid you?

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

ASSISTANT: Sure, I am here to help you.

USER: Sure.

ASSISTANT: Reservation and I cancelled your flight successfully.

USER: Thank you.

ASSISTANT: Thank you for reaching us.