You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Edward Perez is my name. My round trip has been postponed due to some work.

ASSISTANT: Ok.

USER: Aid me to change the reservation.

ASSISTANT: Sure. Please wait.

USER: Ok.

ASSISTANT: Thanks for waiting. No reservation found on your data.

USER: No worries at all. Thank you.

ASSISTANT: Thank you.