You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: One of my client has informed me to that there is a meeting at Seattle location but suddenly he has change the meeting location to other place due to some technical problems, so can you please help me with flight ticket modification process?

ASSISTANT: Sure, I will help you in changing the reservation. May I know your name please?

USER: Thank you for accepting my request and I have reserved the flight on my name Jennifer Mitchell in previous booking.

ASSISTANT: Sorry, I could not found any reservation.

USER: Ok, that's fine. I think it is not yet booked while I was booking that I got a serve issue while I was booking a flight ticket. Thank you for your information?

ASSISTANT: Thank you for reaching us.

USER: Welcome.