You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Me and my friends have planned to celebrate Beer festival at Philadelphia pub crawl, but it has been postponed. I want to change my reservation, Can you please check a reservation on the name of Scott Martin?

ASSISTANT: Sure, I will help you on that, please wait for a moment.

USER: Sure, I will wait.

ASSISTANT: Thanks for waiting. Unfortunately there is no reservation found with your given name.

USER: Ok, Thank you for providing information.

ASSISTANT: Thank you for choosing us.