You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you today?

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: Sure, can you please provide your name to check the reservation?

USER: My name is Nancy Garcia.

ASSISTANT: Please wait for some time, I will check with your reservation status and revert to you.

USER: OK.

ASSISTANT: Sorry we couldn't find any reservation on your name in the database.

USER: OK, no issues.

ASSISTANT: Thank you for approaching us.

USER: Thanks for the help.