You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Samantha Lee.

ASSISTANT: How may I serve you for today Samantha?

USER: Due to bad weather condition in my city, I am planning to change my reservation, can you help me?

ASSISTANT: That's sad, let me check with your reservation first.

USER: Ok, sure take your time.

ASSISTANT: Sorry to inform you Samantha Lee, there is no reservation found by your name.

USER: That's fine. Anyway, thank you for your help.

ASSISTANT: Sorry for the inconvenience by our agency.

USER: That's ok.

ASSISTANT: Thank you for consulting our agency.