You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Rebecca Taylor. Due to my extension of my collage, I want to change my reservation can you help in that?

ASSISTANT: Nice to meet you. Yes sure. Please hold on. Sorry.

USER: Ok.

ASSISTANT: There is no reservation on your name based on my data. Thank you for choosing us, have a nice day.

USER: That's ok. Thank you for helping me.