You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Barbara Martin.

ASSISTANT: How may I assist you?

USER: I need to cancel my reservation due to some issues, can you help me out?

ASSISTANT: Sure, Wait a moment please.

USER: Sure, take your own time.

ASSISTANT: Barbara Martin, we regret to inform you that there is no reservation found on your name in our records.

USER: That's ok, not an issue. Thank you for your help.

ASSISTANT: Thank you for reaching us.