You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Benjamin Smith. Can you cancel my recent reservation, which I have done previously.

ASSISTANT: Sure, I am here to help you. Please wait for a moment to check your details.

USER: Ok, take your own time.

ASSISTANT: Thank you for waiting. No reservation found on your name in my database.

USER: It's ok, it might be not done properly while booking. Thanks for checking.

ASSISTANT: Thank you for reaching us.