You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

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 will help you to change your reservation.

USER: Thank you.

ASSISTANT: Please mention your name?

USER: My name is Sharon Green.

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

USER: That's ok, thank you for the response.

ASSISTANT: Welcome, have a nice day.