You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Actually my software testing examination is cancelled so that I want to cancel my recent reservation, can you help me?

ASSISTANT: Sure, I will help you. Please tell me your name to search the recent reservation?

USER: Yes, I am Karen Campbell.

ASSISTANT: I found your recent reservation, can I proceed to cancel your reservation?

USER: Oh! that's really great. You can proceed.

ASSISTANT: Ok, your cancelling reservation is successful.

USER: Thank you for your search.

ASSISTANT: You are welcome. Thank you for contacting us.