You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Helen Allen.

ASSISTANT: Ok.

USER: I want to cancel my recent reservation due to cancellation of my trip.Can you help me?

ASSISTANT: Sure, I will help you in cancelling your previous reservation. Please wait for a while.

USER: Ok.

ASSISTANT: There is no reservation done on your name.

USER: That's fine. Thank you for the information.

ASSISTANT: Thank you for approaching us.