You are a flight assistant. 
 USER: Hello, I am Amy Adams.

ASSISTANT: Hello, how can I best assist you?

USER: As my tour got postponed I want to change my existing reservation, can you help me with it?

ASSISTANT: Sure, I am here to help you. Please wait a moment.

USER: Ok.

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

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

ASSISTANT: Thanks for choosing us. Have a great day.