You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: Can you cancel my recent reservation which I have done with my name Brenda Williams.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: Sure, take your own time.

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

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for reaching us.