You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ryan Turner.

ASSISTANT: How can I assist you?

USER: I want to change my reservation, can you help me with that?

ASSISTANT: Sure, I will help you. Please, wait a minute.

USER: Thank you. Sure.

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

USER: Ok, thank you for sharing the information.

ASSISTANT: Thank you for availing us.