You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any assistance from us?

USER: I am Ruth Phillips. Can you help me in cancelling my reservation?

ASSISTANT: Sure, I will help you. Please allow me a moment.

USER: Sure.

ASSISTANT: Ruth, I haven't found your reservation to cancel further.

USER: That's fine. Anyway, thank you for your help.

ASSISTANT: Thank you.