You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Lisa Perez.

ASSISTANT: How can I support you?

USER: I already have an reservation to attend a meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation,.

ASSISTANT: Ok.

USER: Please help me in changing?

ASSISTANT: Sure, we are rapturous to help you. Please be on hold for a moment.

USER: Ok.

ASSISTANT: Thanks for being patience, there is no reservation found with your name.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thanks for contacting us, hope to serve you again.