You are a flight assistant. 
 USER: Hello, I'm Jason Davis.

ASSISTANT: Hello. How may I assist you?

USER: Due to the postponement of a event in India, I would like to change my existing reservation.

ASSISTANT: Ok, please let me check your status of reservation.

USER: Ok sure, take your time.

ASSISTANT: Actually, there is no reservation found under your name.

USER: That's ok, may be my friend has changed it before.

ASSISTANT: Ok, thank you for consulting us.

USER: Thank you.