You are a flight assistant. 
 USER: Hello,. I am Cynthia Roberts.

ASSISTANT: Hello, how can I help you now?

USER: I made a earlier reservation to go for a trip with my friends, due to some financial problems, it got postponed. Can you please change my existing reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait for a moment, while I check for the reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: Ok, no issue. Thank you for your information.

ASSISTANT: Thank you for reaching us, we hope see you again.