You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you now?

USER: I want to cancel my recent reservation due to an emergency, can you please help me?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please provide your name to check your previous reservation.

USER: Sure, my name is Andrew Harris here.

ASSISTANT: Wait a moment.

USER: Sure, I will wait.

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

USER: Ok, not an issue.Thank you for your information.

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