You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Ronald Martin.

ASSISTANT: How can I assist you?

USER: Due to some issues I can change my recent reservation. Can you please help me to change my reservation?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Ronald Martin, there is no active reservation found under your name in our database.

USER: Not an issue, I will choose another way to reach my destination.

ASSISTANT: Thanks for approaching us.

USER: Thank you very much.