You are a flight assistant. 
 USER: Hello. Myself Jacob Roberts.

ASSISTANT: Hello. How can I aid you?

USER: I need to change my existing reservation, can you please help me out?

ASSISTANT: Sure, I will help you in modifying your reservation. Please allow me a moment.

USER: Thank you for your kind response. Please take your time.

ASSISTANT: I have found your reservation, may I know your new depart date and arrival date?

USER: My new travelling dates are Nov,23 and Nov,25.

ASSISTANT: Please provide me the travel airport codes.

USER: My travelling airport codes are OAK and AUS.

ASSISTANT: Do you have any specifications?

USER: I need a flight with single connection and my budget is 1000.

ASSISTANT: Here, I found a flight with 1 connection and airfare is about 100. Shall I proceed in booking with this flight?

USER: Please proceed with the reservation.

ASSISTANT: Your ticket has been confirmed for the flight 1023 in UA airlines.

USER: Thank you for booking flight ticket.

ASSISTANT: Thank you for reaching us.