You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How could I assist you today?

USER: I want to change an existing reservation, so please help me in changing the reservation.

ASSISTANT: May I know your good name please?

USER: Myself Laura Young.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: We found a reservation with your given name. Can you please share me your airport codes?

USER: My airport codes are IAH, BOS.

ASSISTANT: When you are planning to travel?

USER: I want to fly on Apr 04 and return on Apr 06.

ASSISTANT: Do you have any other specifications?

USER: I need a single connection.

ASSISTANT: There is an airline called Delta of flight 1020 in an economy class with stopover. Shall I confirm?

USER: You can proceed to booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.