You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my current reservation, can you help me?

ASSISTANT: I will help you, can I know your name for checking your reservation status?

USER: My name in previous reservation was on the name of Scott Green.

ASSISTANT: Green, please wait for sometime.

USER: Sure, take your time.

ASSISTANT: Sorry Green, I have not found any reservation by your name in our database.

USER: Ok, I will be travelling from BOS-MSP for this journey. No issues, thank you for checking.

ASSISTANT: Thank you for contacting us and have a nice day.

USER: You are most welcome.