You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Nancy Edwards. I am planning to change my reservation to another destination, so can you help me to change my reservation?

ASSISTANT: Sure Nancy Edwards, I will help you with that. Please wait a moment to check your reservation status.

USER: Sure.

ASSISTANT: Sorry Nancy Edwards, no reservation has found under your name to change.

USER: That's ok. Thank you for helping me.

ASSISTANT: Thank you for choosing us, have a good day.