You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I would like to book a ticket on Apr 23 to Apr 25, can you help me in booking to Atlanta?

ASSISTANT: May I know your desired airport codes please?

USER: My source is IAH and destination is ATL.

ASSISTANT: Do you have any specifications?

USER: I prefer a economy class.

ASSISTANT: May I know your name please?

USER: I am Joseph Nelson.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: You can reserve it.

ASSISTANT: Your ticket is booked, fight number 1017 with Delta Airlines.

USER: Thank you.

ASSISTANT: Thank you for opting us.