You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Myself Angela Clark. Due to some urgent conference meeting, I am going to cancel my reservation. Can you please help me for this?

ASSISTANT: Sure, I will help you with that.

USER: Ok, I will wait for your kind response.

ASSISTANT: Thanks for your time, there is no active reservation found on your name.

USER: Not a big problem, anyway thank you very much for your kind information.

ASSISTANT: Thank you for approaching us, hope to serve you again.