You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to meet my friend at Washington, please help me in booking a ticket from DEN to IAD.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can I know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Ok, please share your travelling dates?

USER: My planned travel dates are on Sept 18 and Sept 20.

ASSISTANT: Do you have class preference?

USER: Any class is comfortable for me.

ASSISTANT: Please let me know if you have any other specifications.

USER: I prefer normal-cost airline for my trip.

ASSISTANT: To proceed further I need your name. So, can you please share it?

USER: My name is Michael Robinson.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a flight with number 1002 and airline Delta at a price of 300 with 1 connection and it returns in the afternoon in economy class. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Sure, your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us, have a good day.