You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Patrick Evans. I made a reservation earlier to visit museum of fine arts. Due to emergency health issue I want to change my existing reservation. Can you please help me in changing my reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there is no reservation found on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for approaching us.