You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Anthony White. Will you please help me in changing my reservation as my plan to visit my friend's house got postponed?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: There is no reservation on your name.

USER: It's ok. Thank you.

ASSISTANT: Thank you.