You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: My Interview was pre-planned at the last minute, will you please help me to change it as soon as possible?

ASSISTANT: Sure, I am glad to help you. On whose name, you need to change the reservation?

USER: My name is Nicholas Martin.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Ok.

ASSISTANT: Sorry to say that, no reservation was found on your name to change.

USER: That's ok, thanks for the help.

ASSISTANT: Thank you for choosing us.