You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I help you for the day?

USER: I want to cancel my recent reservation due to medical emergency. Can you assist me with this?

ASSISTANT: Sure, we are glad to assist you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: I am Patrick Nelson.

ASSISTANT: Please wait for a while, I will check the reservation status and revert to you.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: Sorry we couldn't find any reservation with your name.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.