You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you at this moment?

USER: I want to change my reservation as my plan to go for adventure trip got postponed. Can you help me?

ASSISTANT: I am here to help you in changing your reservation.

USER: Thank you.

ASSISTANT: Could you please let me know your name to check the reservation status with your name in our booking list?

USER: I am Linda Lewis.

ASSISTANT: Please wait to check in our booking list with your name.

USER: Sure.

ASSISTANT: Sorry to say this Linda Lewis, there is no active reservation with your name in our booking list.

USER: That's Ok, thanks for your assistance.

ASSISTANT: You are welcome, thank you for reaching us.