You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you guide me in changing my recent reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: I am Samuel Lee.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: My trip dates will be Apr 1st to Apr 3rd.

ASSISTANT: May I know your airport codes?

USER: My airport codes will be DFW to PHX.

ASSISTANT: Do you have any other preferences?

USER: I prefer a connecting flight.

ASSISTANT: There is a connecting flight 1019 in Delta airlines at the cost of 200 with economy class. Shall I proceed for booking?

USER: You can proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for reaching us.