You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hi,. How can I help you ?

USER: I'm Kevin Harris. Can you help me out in cancelling the reservation?

ASSISTANT: Sure , just a second .

USER: OK.

ASSISTANT: I am sorry Mr Kenneth Perez, I cannot find any reservation on your name .

USER: It's OK. Thank you for your help.

ASSISTANT: Thank you.