You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nicole Miller, I booked a ticket for Charlotte but now I want to change my reservation with new one to get a flight with low fare. Can you help me to change my reservation?

ASSISTANT: Sure, we are here to help out. We didn't found any reservation by this name.

USER: Ok, thanks for the details.

ASSISTANT: Thank you for contacting us.