You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Donna Taylor.

ASSISTANT: How can I help you now?

USER: Can you please help me in cancelling my reservation?

ASSISTANT: Sure, I am here to help you. Please, wait for a while.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your in our database.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.