You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you?

USER: Can you please help me with changing my recent reservation?

ASSISTANT: Sure, I will help you to change the ticket details. May I know your good name please?

USER: My name is Linda Young.

ASSISTANT: Ok, please give me a moment. I will check the ticket status and get back to you.

USER: Ok.

ASSISTANT: I am really sorry to inform you that, I didn't found any reservation with your name in our database to change the details.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: Most welcome. Thanks a lot for contacting us.