You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Rachel Adams here.

ASSISTANT: How can I assist you today?

USER: As my exam has been postponed, I need your help in changing my recent reservation. Can you please help me with that?

ASSISTANT: Sure, will you please give me a moment?

USER: Sure, take your own time.

ASSISTANT: Your reservation is found. Will you mention your travelling dates please?

USER: Sure, my new departure and return travel dates are 16th and 18th of April.

ASSISTANT: Please provide your airport codes that you want to travel.

USER: My genesis and terminus airport codes are DCA and DFW.

ASSISTANT: Please give me a moment.

USER: Sure, take your own time.

ASSISTANT: Thanks for waiting, there is a flight with price 100 and the connections 1 is available. Shall I confirm your ticket?

USER: That's perfect! Please proceed for booking.

ASSISTANT: Your ticket is booked. The flight number is 1003 and the airline is Spirit.

USER: Thank you so much for your help in booking the ticket.

ASSISTANT: Welcome, have a great day.