You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kathleen Phillips.

ASSISTANT: How can I assist you at this moment?

USER: I want to change my recent reservation. Can you help me out?

ASSISTANT: Sure, I am happy to help you with that. Please be hold on for  a moment and I will check your reservation status. Sorry Kathleen Phillips, no reservation has found under your name to change.

USER: That's ok. Anyway, thank you for your help.

ASSISTANT: My pleasure. Thank you for choosing us, have a great day.