You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: I am Brandon Anderson. Please change my existing reservation, as my educational tour has been postponed due to budget problem.

ASSISTANT: Ok, please hold on for a moment. Your reservation has been found. Can you please provide your new travelling details?

USER: My airport codes are IAD and ORD. My travelling dates are 06/08 and 06/10.

ASSISTANT: There is a flight 1004 of Frontier airlines available on your requested dates. Shall I proceed?

USER: May I know the price limit?

ASSISTANT: The price is 100 with 1 connection.

USER: Ok, please confirm my booking.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for the help.

ASSISTANT: Thank you for approaching us.