You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I have already reserved my ticket, but now I want to cancel that reservation. Can you help me to cancel reservation?

ASSISTANT: Sure, wait for a while.

USER: I am Daniel Brown.

ASSISTANT: There is no reservation found under your name.

USER: It's ok, no issues. Thanks for helping me.

ASSISTANT: Thank you for reaching us.