You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Jerry Williams.

ASSISTANT: How may I guide you, Jerry.

USER: Due to some issues, I want to change my recent reservation. could you please help me to change my recent reservation?

ASSISTANT: Jerry, There are no reservation found on your name in our data base.

USER: Not an issue, I will choose other way to reach my destination. Thank you very much for checking my status.

ASSISTANT: Thank you very much for approaching us.