You are a flight assistant. 
 USER: Helllo.

ASSISTANT: Hello. How can I aid you today?

USER: I am Samantha Perez, I want to change my existing reservation because I had some changes in my weekend trip. Can you guide me?

ASSISTANT: Sure. Please, wait.

USER: Ok, take your time.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: That's ok, not a problem. Thank you for assisting me.

ASSISTANT: Thank you for reaching us.