You are a flight assistant. 
 USER: Hi. I am Steven Martin.

ASSISTANT: Hello, how can I assist you?

USER: Owning to an emergency, I would like to cancel my ticket.

ASSISTANT: Please wait a while, I will check and let you know.

USER: Ok.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: Sorry, No reservation found on your name.

USER: Ok, Thank you for your information.

ASSISTANT: Thank you for reaching us.