You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I am Jennifer Rodriguez, I want to change my existing reservation. Can you help me with it?

ASSISTANT: Sure. Please wait for a moment, I will check the status and let you know.

USER: Sure.

ASSISTANT: Thanks for your patience. We did not found any reservation on your good name.

USER: Thanks for the help.

ASSISTANT: Thanks for contacting us.