You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, welcome to our agency.

USER: Do you provide ticket cancellation services?

ASSISTANT: Yes, we do. How can I assist you?

USER: The event which I am planning to attend has been cancelled. Can you please cancel my reservation?

ASSISTANT: Sure, I will help you. May I know your name please to check the status of the reservation?

USER: Well, my name is Lisa Gonzalez.

ASSISTANT: Lisa, there is no reservation found with your details.

USER: Oh! I guess there is a server issue while booking the ticket. Anyways, thank you for the information.

ASSISTANT: Do you require any assistance from us?

USER: No, thank you for your service.

ASSISTANT: Thank you for contacting our agency, have a good day.

USER: You are welcome.