You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I assist you?

USER: Please cancel my recent reservation owing to an emergency.

ASSISTANT: Sure, we are here to help you. May I know your good name?

USER: My name is Samuel Clark.

ASSISTANT: Please, stay online. I will check the previous list and revert to you.

USER: Ok.

ASSISTANT: Thank you for your valuable time. No reservation was found on your name to cancel.

USER: Thanks for the assistance.

ASSISTANT: Thank you for reaching us, have a good day.