You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I need to change my reservation as my meeting venue got placed to another place, can you please help me in changing my reservation?

ASSISTANT: Sure, may I know your good name please?

USER: I am Brandon Collins.

ASSISTANT: Ok, give me sometime to check and get back to you.

USER: Ok.

ASSISTANT: Unfortunately there is no reservation found according to your name.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for picking us.