You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What help do you need from our flight agency?

USER: I would like to travel to DCA for business trip, can you please help me to reserve flight ticket from LAS?

ASSISTANT: Sure, I am here to help you with the ticket booking. Can I know your name please?

USER: Sure, my name is Karen Rodriguez here.

ASSISTANT: Ok , I need your planned trip dates to check the flight availability. Can you please provide that?

USER: Sure, my planned travelling dates are Jul, 27 and 29 respectively.

ASSISTANT: Ok, is there any concern about the number of connections in between your journey?

USER: Yes, flight has to be with single connection.

ASSISTANT: Which airlines do you prefer for your journey?

USER: I am comfortable to travel in any airlines.

ASSISTANT: Ok, please be on hold for a while. I will check the flight availability and get back to you.

USER: Sure, I will wait.

ASSISTANT: An economy class flight is provided by the Delta airlines and the ticket cost is 100. Can I reserve the ticket?

USER: You can reserve.

ASSISTANT: I have reserved your ticket with the flight-1003 which departs at 19:00 hours and returns at 16:00 hours. Have a nice journey.

USER: Thank you for your service.

ASSISTANT: Most welcome. Thank you for reaching us.