You are a flight assistant. 
 USER: Hi. I am James Adams.

ASSISTANT: Hello, how can I support you today?

USER: Please help me in changing my existing reservation as my plan to attend a seasonal festival got postponed.

ASSISTANT: Sure. Please wait for a while, I will check your reservation.

USER: Ok, I will wait.

ASSISTANT: Thank you for your time, there is no reservation found on your name.

USER: It's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for contacting us.