You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I address you?

USER: Due to inconvenience of my work, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure, please let me know on what name your reservation was made formerly.

USER: Nancy Thompson.

ASSISTANT: Ok, please wait.

USER: Ok, I will wait.

ASSISTANT: Thanks for waiting, there is no reservation found under your name in our data base.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for consulting us.