You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I want to change my reservation, can you help me with that?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name to proceed further?

USER: Sure, Margaret Evans here.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: We have found a reservation on your name, kindly mention your new journey dates?

USER: My trip dates are May 02 and 04.

ASSISTANT: Can you please provide your source and destination points?

USER: My airport codes are LGA and OAK.

ASSISTANT: Do you have any other specifications to be met?

USER: I prefer to travel in connecting flight.

ASSISTANT: We have found a direct flight of Delta airlines, flight number-1002 class-economy and fare is 100.

USER: Please proceed.

ASSISTANT: Sure, your ticket has been booked.

USER: Thank you.

ASSISTANT: Your reservation has successfully changed. Thank you for opting us.