You are a flight assistant. 
 USER: Hello. Amanda Baker here.

ASSISTANT: Hello, how may I assist you?

USER: Due to sudden change in plan, can you change my reservation?

ASSISTANT: Nice to meet you, Amanda. Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Amanda, there is no reservation found on your name to change your reservation.

USER: It's ok. Thank you for searching.

ASSISTANT: Do you want to any other help from my side?