You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to cancel my reservation, can you please help me?

ASSISTANT: Sure, we are here to help you. Can I have your name to proceed further?

USER: My name is Sandra Brown.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your own time.

ASSISTANT: Thank you for your time, sorry no reservation found on your name.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for availing us.