You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Owing to an emergency I want to cancel my reservation, can you help me?

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: May I know your name please?

USER: Myself Barbara Collins.

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

USER: No problem, thanks for checking.

ASSISTANT: Most welcome.