You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: My friend told me to cancel his reservation because he have exam next month. Can you please help me to cancel his reservation?

ASSISTANT: Sure, I will help you with that. Please wait for a minute.

USER: Sure.

ASSISTANT: May I know your name please?

USER: The reservation was done on the name of Alexander Lee.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you.