You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I am Ruth Gonzalez, I would like to change my resent reservation as my fun fest with my friends has been postponed.

ASSISTANT: Sure, Ruth Gonzalez. Please wait for a minute, I will check the status and notify you.

USER: Sure.

ASSISTANT: Thanks for your time, we are sorry to notify you that no reservation has found based on your name.

USER: Its fine, thank you for your fast response.

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