You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Catherine Roberts. I need to cancel my reservation, can you help me out?

ASSISTANT: How can I assist you today? Please wait for a while.

USER: Sure.

ASSISTANT: There is no reservation found under your name in our database.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.