You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Donna Nelson.

ASSISTANT: How may I address you today?

USER: I would like to visit USS Constitution world's oldest commissioned naval vessel in Boston, BOS. Can you please book a flight ticket under the fare of 1000?

ASSISTANT: Sure, we are mirthful to help you in booking.

USER: Thank you.

ASSISTANT: Kindly let me know if you need a connecting flight in between your journey.

USER: Yes, I need a connecting flight in between journey.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My journey start on 06/04 and arrival on 06/06.

ASSISTANT: May I know your source airport code?

USER: DFW is my source code.

ASSISTANT: Do you have any class preference?

USER: I am comfortable to travel with any class.

ASSISTANT: Thank you for sharing your journey details, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a Delta airline matching your essential details with single connection and the fare 100.

USER: Ok, proceed with the booking.

ASSISTANT: Your booking has been confirmed with economy class and the flight number is 1005.

USER: Thank you for the help.

ASSISTANT: Thank you for approaching us.