You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am William Walker.

ASSISTANT: How can I aid you?

USER: I planned to meet my friend in LGA, can you please help me to book a flight ticket from DCA?

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

USER: I prefer to travel on 10/11 and 10/13.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, here I found a flight with 1 connection and airfare is about 100. Shall I proceed in booking?

USER: Ok, please confirm my booking.

ASSISTANT: Your ticket has been confirmed for the flight 1020 in Frontier airlines.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.