You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Alexander Rodriguez. I made a reservation earlier to attend a get together party with my college friends. Due to some issues in college it  got postponed.

ASSISTANT: Sure, I will help you. Can you please confirm me whether to change the ticket or book another ticket?

USER: Yes, please change my reservation.

ASSISTANT: Ok, please hold on for a minute. I will check your ticket status.

USER: Sure.

ASSISTANT: Sorry to inform you, there is no reservation found with your name to change the details.

USER: That's ok. thank you for your information.

ASSISTANT: You are welcome, thank you for choosing our travel agency.