You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kathleen Campbell.

ASSISTANT: How may I help you today?

USER: Can you help me for cancelling my recent reservation?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: OK.

ASSISTANT: Sorry to say that, no reservation found on your name in our database.

USER: Oh! It's ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us.