You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Amy Nelson.

ASSISTANT: How can I help you?

USER: I need to modify my reservation, can you help me out please?

ASSISTANT: Sure, please be on hold. There is no reservation found under your name to do changes in it.

USER: Sure.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.