You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Helen Evans.

ASSISTANT: How may I guide you today?

USER: I would like to cancel my reservation as I have some urgent meeting at my office. Can you please help me?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: Sure.

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

USER: That's fine. Anyway, thank you for checking.

ASSISTANT: Thank you for reaching us.