You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: Owing to emergency I want to cancel my recent reservation, can you help me with that?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: I am Eric Lopez.

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

USER: No problem, thank you for the checking.

ASSISTANT: Thank you.