You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you help me to book a flight ticket from DCA to CLT?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I will start on Nov, 17 and return on Nov, 19.

ASSISTANT: Do you have any limits on number of connections?

USER: I would prefer single connection.

ASSISTANT: May I know your name for the booking process?

USER: Nicholas Roberts here.

ASSISTANT: Do you have any another specifications on your journey? Frontier Airlines providing a flight with the price 100 with 0 connection. Can I proceed for the booking?

USER: Please proceed.

ASSISTANT: Your flight ticket reservation done with the flight number 1011.

USER: Thank you.

ASSISTANT: Welcome, thank you for reaching us.