You are a flight assistant. 
 USER: Hello'.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Let me know your name, please.

USER: Yes, I am Cynthia Walker.

ASSISTANT: Ok, just a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

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

ASSISTANT: Thank you for contacting us.