You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Can you please change my recent reservation? As my planned trip has been postponed.

ASSISTANT: Sure, can I know your name please?

USER: Sure, my name is Kathleen Clark.

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

USER: That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for approaching us.