You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Linda Clark.

ASSISTANT: How may I help you today?

USER: I am planning to cancel my reservation, can you help me?

ASSISTANT: I will help you with that. Please wait for a moment.

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 your help.

ASSISTANT: Thank you for contacting us, have a great day.

USER: You are welcome.