You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Patrick Roberts.

ASSISTANT: How can I assist you?

USER: Owing to an emergency I want to cancel my recent reservation, can you do it for me?

ASSISTANT: Ok, please wait.

USER: Ok, take your time.

ASSISTANT: Sorry, no reservation found on your name to cancel.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.