You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER:  I have to do some modification in my previous flight ticket booking that there is a sudden event held at my home town, so I am unable to travel the trip. Can you please help me out in changing my reservation?

ASSISTANT: Sure, may I know your name to check for the previous reservation?

USER: Sure, myself Donna Anderson.

ASSISTANT: I found your reservation. Can you please help me with your airport codes?

USER: That's good to hear, my airport codes are from EWR to LAS.

ASSISTANT: Could you please share your travel dates?

USER: My travelling dates are from 12/02 to 12/04.

ASSISTANT: May I know your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other specification that you are looking for?

USER: No.

ASSISTANT: There is a flight available with price 100 and the connection is 1 with JetBlue airline. Would you like me to proceed with the booking?

USER: Please proceed with the booking.

ASSISTANT: Your booking is confirmed with 1027 flight number and the depart time is 16:00 hours, return time is 9:00 hours.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.