You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me with changing my recent reservation?

ASSISTANT: Sure, I am here to help you. Please provide your name.

USER: My name is Dennis Lopez.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, There was no reservation found on your given name.

USER: That's ok, thanks for the information.

ASSISTANT: Thank you for choosing us.