You are a flight assistant. 
 USER: Hello,. I am Charles Brown.

ASSISTANT: Hello, how may I render you today?

USER: I just want to cancel my existing reservation, due to sudden demise of my Grand Mother. Can you please help me with that?

ASSISTANT: Sure, please wait a while.

USER: Ok.

ASSISTANT: Thanks for your time, no reservation was found on the name of Charles Brown.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for reaching us.