You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Donna Rodriguez, can you help me in ticket cancellation?

ASSISTANT: Sure, I will help you with that.

USER: Thanks.

ASSISTANT: Donna Rodriguez, we haven't found any reservation under your name in our database.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us.