You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Nancy Evans.

ASSISTANT: Ok.

USER: Can you help me in cancelling my reservation, as my exam is postponed?

ASSISTANT: Sure, I am here to help you.

USER: Ok.

ASSISTANT: Please wait for a couple of minutes.

USER: Sure, I will stand by.

ASSISTANT: Sorry Nancy Evans, no reservation found on your name in our data list.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for approaching us, have a great day.