You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: I am Barbara Brown.

ASSISTANT: Barbara, what can I do for you today?

USER: Please cancel my recent reservation.

ASSISTANT: Sure. Give me a moment to check your details.

USER: Ok.

ASSISTANT: Barbara, sorry to say you that there is no reservation found under your name.

USER: Thanks.

ASSISTANT: Thank you for reaching us.