You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you from my end?

USER: Myself Ronald Evans.

ASSISTANT: Yes, Evans.

USER: Can you help me to change my existing reservation because I can not make that journey?

ASSISTANT: I am here to help you out. Please allow a moment.

USER: Ok.

ASSISTANT: Sorry Evans, there is no active reservation on your name.

USER: That's ok, not a problem. Thank you for helping me.

ASSISTANT: Thank you for reaching us.