You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: Please book me a ticket from IAD to DTW where I have a concert to attend. Can you help me?

ASSISTANT: Sure, I will help you with booking. Please share me your planned journey dates?

USER: My travel dates are Dec 18 and Dec 20.

ASSISTANT: Please mention your conenction limit?

USER: I would like to travel by single connection flight.

ASSISTANT: Is there any other requirement?

USER: No. Thank you for asking.

ASSISTANT: May I know your good name?

USER: Joshua Garcia.

ASSISTANT: I found a connecting flight 1003 of airline UA, fare is 100 and class is economy. Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you very much for the help.

ASSISTANT: Thank you for visiting us, we hope see you again.