You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to attend a cultural event at Charlotte, can you help me to book a flight ticket from IAD to CLT?

ASSISTANT: Can I know your journey dates?

USER: My travel dates are 21 and 23 of Dec.

ASSISTANT: Do you have connection preference?

USER: I want a connecting flight.

ASSISTANT: Is there any preference?

USER: No.

ASSISTANT: Found ticket with Frontier airlines for price 100 having flight number 1007.

USER: Please proceed.

ASSISTANT: May I know your name?

USER: I am Mary Edwards.

ASSISTANT: Your ticket is booked.

USER: Thank you for helping me.

ASSISTANT: Thank you.