You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I would like to change my existing reservation, due to examination schedule postponed. Can you please help me?

ASSISTANT: Sure, we are glad to help you. Please help me with your good name.

USER: My name is Kevin King.

ASSISTANT: We are happy to inform you that there is a reservation found on your name. Can I have your travelling dates please?

USER: My travelling dates are June 13 and June 15.

ASSISTANT: Kindly mention your respective airport codes.

USER: My airport codes are PHX and SFO.

ASSISTANT: Do you have any break in between journey?

USER: I need a single connection flight.

ASSISTANT: Is there any other specifications for you?

USER: No.

ASSISTANT: Thanks for providing details, we found a connecting flight in JetBlue airline with a fare of 200 which departs at 16:00 PM and return at 12:00 PM. Shall I proceed for booking?

USER: Ok, please proceed for booking.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1014.

USER: Thank you for your help.

ASSISTANT: Thank you for availing us.