You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: I already book a flight ticket on last week, now I want to cancel it. Can you help me with that?

ASSISTANT: Sure, I will help you with that. Can you please mention your name for further process?

USER: My name is Susan Taylor.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is no previous reservation available under your name.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.