You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Stephanie Scott here.

ASSISTANT: How can I help you at this moment?

USER: Can you change my flight ticket reservation? As my business trip is postponed to a different date.

ASSISTANT: Sure, I will help you with that. There is no previous reservation available in your name.

USER: Ok, that's not a problem. Thanks for checking.

ASSISTANT: Thank you for reaching us, have a nice day.