You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you at this moment?

USER: Charles Anderson here. I was made a reservation earlier in this week. But I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure. Please wait for a moment.

USER: Ok, I will wait.

ASSISTANT: Sorry, there is no reservation showing on your name.

USER: Anyway, thank you for the information.

ASSISTANT: Welcome. Thank you for reaching us.