You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may help you .

USER: I'm Katherine Clark, Would you help me in cancelling a reservation?

ASSISTANT: Yes Mr Katherine Clark can you please provide me your details to verify your reservation . I am sorry, I could not find your reservation.

USER: That's fine, thank you for the information.

ASSISTANT: Thank you , is there any other information that I can provide you .

USER: No,  thank you for your help.