You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Anna Campbell.

ASSISTANT: How may I aid you today?

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

ASSISTANT: Ok, please mention your travelling dates for the following journey. Oh! Sorry, let me check with your previous booking.

USER: Sure.

ASSISTANT: I am so sorry to inform you, there is no active reservation found by your name.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for approaching our services. Have a nice day.