You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you help me cancel my reservation which was made on the name of Gregory Perez?

ASSISTANT: Sure, we are here to help you. Please wait a while.

USER: Sure.

ASSISTANT: Thanks for your time.

USER: That's fine. Thank you.

ASSISTANT: We didn't found any reservation by this name.

USER: Thank you.

ASSISTANT: Thank you.