You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how best I can assist you at this moment?

USER: I need to change my existing reservation as my exams got postponed, Can you please help me with that?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know on which name the ticket was reserved?

USER: James Wright here.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: We found a reservation on your name, can you please forward your new journey dates?

USER: I would like to travel on 04/24 to return on 04/26.

ASSISTANT: Kindly assign your airport codes?

USER: My source point is SEA to IAH.

ASSISTANT: Do you prefer economy or business class in your journey?

USER: I am comfortable with any class.

ASSISTANT: In which airlines you wish to travel?

USER: I need a normal cost airline.

ASSISTANT: Is there any more preferences do you need?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a Delta airlines, price is 100 in economy class, with one stopover. Shall I proceed?

USER: Ok, proceed for booking.

ASSISTANT: Your reservation has been changed, and the flight number is 1023.

USER: Thanks for your information.

ASSISTANT: Thank you for choosing us.