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

ASSISTANT: Hello, how can I assist you?

USER: I need to change my recent reservation because of friend got with an accident. Can you please help me that?

ASSISTANT: Ok, I am blissful to help you. Please wait for a minute.

USER: Sure.

ASSISTANT: We are very sorry to inform you that, There is no reservation found on Brenda Brown.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for contacting us.