You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to change my existing reservation, as I am not interested to travel now. Can you please help me with this?

ASSISTANT: May I know your name?

USER: I am Cynthia Taylor.

ASSISTANT: Sorry, no reservation found. Thank you for reaching us.

USER: Thank you for your information.