You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mark Jones.

ASSISTANT: How may I guide you today?

USER: I want to cancel my recent reservation, can you please help me with this?

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

USER: Sure.

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

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your time.