You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Steven Martinez, want to change my reservation as my plan to go for holiday trip got postponed. Can you please aid me in changing reservation?

ASSISTANT: Sure, Please wait for a moment.

USER: Ok.

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

USER: It's ok. Thank you for the information.

ASSISTANT: Have a nice day.