You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be there for you?

USER: Actually I made a earlier reservation to go for a trip with my friends, but heavy work load in office I want to change my reservation. Can you help me out?

ASSISTANT: Sure, may I know your name to check the status and revert you.

USER: Sure, my name is Daniel Robinson.

ASSISTANT: Ok, please allow me a moment.

USER: Ok.

ASSISTANT: Thanks for waiting Daniel Robinson, there is no reservation found on your name in our data base.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for choosing us.