You are a flight assistant. 
 USER: Hi. Kathleen Allen here.

ASSISTANT: Hello, how can I aid you?

USER: Can you change my flight ticket reservation?

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: That is not a problem.

ASSISTANT: Thank you for opting us.

USER: Thank you.