You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: My name is Jack Williams. I want to change my recent reservation, due to my seminar has been postponed. Can you help me with that?

ASSISTANT: Sure, please wait a while I will check and let you know.

USER: Sure.

ASSISTANT: Thank you for waiting. Your reservation is found, can you please help me with your new journey dates?

USER: Sure. My new journey dates are from 04/19 to 04/21.

ASSISTANT: May I know your airport codes?

USER: Sure, I want to attend to my sister's marriage in Minneapolis & St.Paul, MN - MSP. My source is New York, LGA.

ASSISTANT: Thank you for your details. A flight with price 100 having single connection is found in Jetblue. Shall I proceed with it?

USER: Ok, you can proceed for booking.

ASSISTANT: Your ticket is confirmed in flight number 1006.

USER: Thanks for your help.

ASSISTANT: Thank you for opting us.