You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Brenda Turner.

ASSISTANT: How can I help you?

USER: Can you change my recent reservation, as my trip has been cancelled.

ASSISTANT: Sure, I am happy to help you. Give me a minute.

USER: Sure.

ASSISTANT: I am sorry to say that there is no reservation found on your name.

USER: Thank you for checking, no issue.

ASSISTANT: Welcome.