You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Myself Nicole Lopez. I would like to change my recent reservation due to some personal issues, Will you help me with that?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry, I didn't find any reservation on your name in our database.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Welcome, have a nice day.