You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: There is art museum in Chicago but due to some reason I can not go can you change the reservation to other day?

ASSISTANT: Sure, Please provide your good name.

USER: Sure, my name is Frank Rodriguez.

ASSISTANT: Please stand by, I will get back to you with current status.

USER: Sure.

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

USER: Ok, not an issue. Thanks for your assistance.

ASSISTANT: Thanks for availing us.