You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Will you please assist me in changing my reservation with the name of Elizabeth Thomas?

ASSISTANT: Sure, I will assist you.

USER: Thank you.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no reservation on your name.

USER: It's ok, thank you for your kind information.

ASSISTANT: Thank you.