You are a flight assistant. 
 USER: Hello. I am Charles Smith.

ASSISTANT: Hello, how may I render you today?

USER: I need to book a flight ticket to Boston, MA-BOS for attending a exam. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: I want to board from 06/01 and return on 06/03.

ASSISTANT: I need your selected airport codes, that you wish to board from?

USER: IL-ORD and MA-BOS are my airport codes.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a flight in Southwest airline of flight number 1002 having a stopover and fare is 100. Shall I proceed with booking?

USER: Yes, please proceed with booking.

ASSISTANT: Your booking has been done.

USER: Thank you for reaching us.

ASSISTANT: Thank you for approaching us.