You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am looking to travel to Las Vegas, can you please find a flight which is having a single connection limit?

ASSISTANT: Sure, can you share your trip dates?

USER: Thank you. I am willing to travel in the dates of November 19th and 21st.

ASSISTANT: May I know your airport codes?

USER: The airport codes are DCA and LAS.

ASSISTANT: Do you have any preferences?

USER: No, I have mentioned my preferences already.

ASSISTANT: May I know your name?

USER: My name is Emily Walker.

ASSISTANT: There is a connecting flight with number 1007 in airline Frontier, the fare is 200 in economy class. Can I book it?

USER: That's prefect for me to travel, please proceed to reserve the ticket.

ASSISTANT: Your ticket is reserved, the depart time is 15:00 hours and return time is 20:00 hours.

USER: Thank you for your help in reserving the flight ticket.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.