You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: My name Ryan Lopez, I have to change my reservation due change in the plan to meet my brother.

ASSISTANT: OK please wait a while I will check and let you know.

USER: Ok.

ASSISTANT: Thanks for being waiting. Unfortunately, there is no reservation found by this name.

USER: Thanks for the information.

ASSISTANT: Thank you for contacting us.