You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you?

USER: Myself Samantha Gonzalez. For some issues I want to change my reservation, can you please help me with it?

ASSISTANT: Sure, just a moment please.

USER: Ok.

ASSISTANT: I am sorry no reservation found on your name.

USER: It's ok. Thank you for the information.

ASSISTANT: Thank you for choosing us.