You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I amend you today?

USER: I am Amy Collins. Owning a private work, I would like to change my resent reservation. Can you help me with it?

ASSISTANT: Sure, we are happy to help you. Can you please wait for a moment, I will check with your reservation and get back to you.

USER: Sure.

ASSISTANT: Thank you for waiting. We are sorry to inform you that, we couldn't find any reservation against your name.

USER: No problem, thank you for your help.

ASSISTANT: Thank you for reaching us with a query. we hope to serve you again.