You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I aid you today?

USER: Can you change my existing reservation?

ASSISTANT: Sure. May I have your name please?

USER: My name is Ashley Rodriguez.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for your time, but no reservation was found on your name.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you.