You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Barbara Evans here.

ASSISTANT: How can I help you?

USER: Can you cancel my recent reservation, which I have done with my name?

ASSISTANT: Sure, let me check your reservation status in our database.

USER: Ok, take your time.

ASSISTANT: Sorry, we couldn't found any reservation in our database.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for choosing us.