You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donald Phillips.

ASSISTANT: How may I assist you today?

USER: I want to cancel my recent reservation. Can you help me in doing that?

ASSISTANT: Sure, I can help you with that. Please let me check your reservation status.

USER: Ok, thank you for your help.

ASSISTANT: Donald Phillips, there is no reservation found under your name to do cancellation.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.