You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: I want to change my present reservation. Can you help me for that one?

ASSISTANT: Sure, could I have your name please?

USER: Sure, Robert Martin here.

ASSISTANT: I have found your reservation, can you please share your location airport codes?

USER: My airport codes are IAH to BOS.

ASSISTANT: Ok, may I know your trip dates?

USER: My trip dates are 04/16 and 04/18.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

ASSISTANT: The economy class with flight number 1003 of Delta airline is available having fare as 100 and connection as 1, is it ok for you?

USER: Yes, you can proceed with that booking.

ASSISTANT: Ok, your reservation is confirmed. The departure time is 9:00 hours and the arrival time is 19:00 hours.

USER: Thank you for the booking.

ASSISTANT: You are welcome, have a great day.