You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you help me?

ASSISTANT: Yes, can you tell me your name?

USER: Jennifer Johnson here.

ASSISTANT: I have found reservation on your name. Can you tell me your dates of travel?

USER: My trip dates are 10/25 and 10/27.

ASSISTANT: Can you share me your nearest airport codes?

USER: My airport codes are ORD-LGA.

ASSISTANT: Do you have any preferences?

USER: No.

ASSISTANT: I have found an economy class ticket with a price of 100 and 1 connection.

USER: Please do the booking.

ASSISTANT: Can I know your name for booking?

USER: Jennifer Johnson here.

ASSISTANT: Your ticket has been booked.

USER: Thank you so much.

ASSISTANT: Thank you for contacting us.