You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, may I know your name please?

USER: I am Joshua Nelson.

ASSISTANT: Please be on hold.

USER: Ok.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal to make cancel.

USER: Thanks.

ASSISTANT: Thank you for reaching us.