You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Nicole Garcia. I want to change my reservation, please help in that?

ASSISTANT: Sure, I will help you with the change of flight reservation.

USER: Thanks.

ASSISTANT: Thanks for waiting. But I am sorry to say that there is no reservation on your name.

USER: Oh! That's ok. Anyway, thank you for for your help.

ASSISTANT: Thanks for reaching to us.