You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Actually my Hockey competition is postponed, I want to change my existing reservation. Can you help me?

ASSISTANT: Sure, can you share your name for checking?

USER: Ok, I am Elizabeth Perez.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.