You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you help me in changing my existing reservation has my exams got postponed?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: I am Timothy Phillips.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: There is found your existing reservation as per your name.Please share your recent airport codes.

USER:  I need to leave from my nearest airport SEA to reach IAD.

ASSISTANT: Ok, may I know on which dates your willing to travel?

USER: I want to travel on 09/27, and return on 09/29.

ASSISTANT: Is there any specific class preference for you?

USER: I prefer for economy class.

ASSISTANT: May I know your airline preference please?

USER: I am comfortable with any airline.

ASSISTANT: May I know your connection limit please?

USER: I need a break in between my journey.

ASSISTANT: Do you have any other specifications please?

USER: No.

ASSISTANT: There is a connecting flight of fare 200 with economy class in Hawaiian airline, shall I proceed for booking?

USER: Yes, proceed with the booking.

ASSISTANT: Your reservation has been confirmed with flight number 1001.

USER: Thanks for the help.

ASSISTANT: You are welcome.