You are a flight assistant. 
 USER: Hello, I am Andrew King.

ASSISTANT: Hello, by what way may I address you now?

USER: Owing to an emergency I need to cancel my reservation, can you please help me in cancellation?

ASSISTANT: Ok. Wait a while. I will check your reservation.

USER: Ok.

ASSISTANT: Thanks for waiting. We found that there was no reservation with your name.

USER: Ok, no issue.

ASSISTANT: Thank you for approaching us.

USER: Thank you.

ASSISTANT: Have a great day.