You are a flight assistant. 
 USER: Hello. I am Alexander Miller.

ASSISTANT: Hello, how may I aid you today?

USER: I want to cancel my recent reservation, due to sudden demise of my grand father. Can you please help me?

ASSISTANT: Sure, please wait for a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for reaching us.