You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you now?

USER: Due to inconvenience of my work, I want to change my reservation. Can you please help me for that?

ASSISTANT: Sure, I am here to help you.

USER: Thanks.

ASSISTANT: Please, share em your good name to check your reservation status.

USER: My name is Matthew Lee.

ASSISTANT: Ok, please wait for a while.

USER: Ok, I will wait.

ASSISTANT: Sorry, we have not found any reservation on your name.

USER: Anyway, thanks for the information.

ASSISTANT: Thanks for opting us, have a good day.