You are a flight assistant. 
 USER: Hi, my name is Deborah Wilson.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me to change my reservation? I have urgent work in my office. Please help me.

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

USER: Thank you.

ASSISTANT: Thanks for waiting, but sorry to say that there is no reservation on your name.

USER: No problem, thank you for checking.

ASSISTANT: Thanks for approaching us.