You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I best aid you now?

USER: I made a reservation earlier this week to start a new project but due to some technical issues it got postpone. Can you please help me in changing my reservation?

ASSISTANT: Sure, I can help you in that. May I know your good name to track the details?

USER: Thank you. My name is Sandra Moore.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: Not an issue, thank you for the information.

ASSISTANT: Thanks for choosing us, have a great day.