You are a flight assistant. 
 USER: Hello. I am Janet Rodriguez.

ASSISTANT: Hello, how can I guide you for today?

USER: I am a cop and I have reserved a flight ticket to attend a meeting but suddenly I got a call from higher authorities that the meeting got postponed, can you please help me in flight ticket modification process?

ASSISTANT: Sure, I will help you with that.

USER: Thank you for accepting my request in positive manner.

ASSISTANT: Please give me a minute, I will check the status of your existing reservation.

USER: Sure, take your own time and provide the information regarding my flight ticket modification.

ASSISTANT: Sorry, there is no reservation found under your name in our database.

USER: Ok, I think it is not reserved properly while I was booking the ticket. Thank you so much for your immediate help.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: Welcome.