You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Rachel Williams. I made a earlier reservation to meet my friend, due to some problems it got  postponed. Can you please cancel  my reservation?

ASSISTANT: Sure Rachel, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry Rachel Williams, no reservation has found under your name to cancel.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for choosing us, have a good day.