You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I'm Melissa Jones.

ASSISTANT: How can I assist you Melissa Jones?

USER: Due to land slides at my visiting place, I want to cancel my recent reservation. Can you please help me with that?

ASSISTANT: Please hold on a moment, let me check the database and get back to you.

USER: Sure.

ASSISTANT: I have searched the database and I couldn't find any active reservation under your name.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for contacting us.