You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

USER: Help me in changing my flight reservation.

ASSISTANT: Sure, I am happy to help you with that. Can I have your good name please to check your reservation status?

USER: Pamela Martin here.

ASSISTANT: Ok, please wait a moment. Sorry Pamela Martin, no reservation has found under your name to change.

USER: No issues.

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

USER: Thanks for checking.