You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What kind of help you need from our travel agency?

USER: I want to book a flight to DFW to attend a meeting. Can you book a flight from DCA?

ASSISTANT: Sure, I will help you with that. Can I know your departing and returning travel dates?

USER: I will travel on May 10 and return on May 12.

ASSISTANT: Is there any class preference?

USER: Yes, I prefer to travel in economy class.

ASSISTANT: Ok, is there any other preferences?

USER: I would like to travel in connecting flight.

ASSISTANT: What is your good name?

USER: My name is Gary Clark.

ASSISTANT: Ok, I will check the flight and get back to you.

USER: Sure.

ASSISTANT: There is a flight in the JetrBlue airlines which is having a single connection limit and the ticket cost is 200 in an economy class. Shall I reserve ticket?

USER: Please proceed with booking.

ASSISTANT: As per your request, I have successfully confirmed your flight ticket with flight-1013. The flight departs at 18:00 hours and returns at 10:00 hours. Have a nice journey.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.