You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Nicole Wright. Suddenly my trip plan is changed.So I want to change my reservation. Can you please help me for that?

ASSISTANT: Ok, wait a moment I will check your details. Thanks for waiting.No reservation found for you.

USER: Thanks for your help.

ASSISTANT: Thanks for reaching us.Have a nice day.