You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to change an existing reservation as my tournament got postpone due to bad weather conditions. Can you please check the reservation by this name Edward Miller?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT:  Sorry, we couldn't find a reservation on your name to change.

USER: Ok, not an issue. Thank you for information.

ASSISTANT: Thank you for choosing us.