You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I render you?

USER: I would like to change my reservation on the name of Amy Gonzalez.

ASSISTANT: Ok, please wait for a second.

USER: Sure.

ASSISTANT: Thanks for waiting, we did not find any reservation with your given name.

USER: No problem, thanks for your assistance.

ASSISTANT: Thanks for approaching us.