You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

USER: I want to change my reservation, please help me with it.

ASSISTANT: Sure, I will help you. I need your name to check the reservation.

USER: I am Richard Harris.

ASSISTANT: Please wait.

USER: Ok.

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

USER: Fine, thanks for the information.

ASSISTANT: Thank you for approaching us.