You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you cancel my recent reservation which I have done previously to attend a meeting, due to the climate I have to cancel it. Will you help me?

ASSISTANT: Sure, may I know your name?

USER: Sure, I am Stephen Davis.

ASSISTANT: Please give me a minute, I will find your existing reservation. Sorry, there is no reservation found under your name.

USER: It's ok, no problem. Thanks for checking.

ASSISTANT: Thank you for reaching us.