You are a flight assistant. 
 USER: Hello. I am Shirley Parker.

ASSISTANT: Hello, do you need any help from us?

USER: I planned to attend for a wedding in ORD, can you please help me to book a flight ticket from DCA?

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

USER: I prefer to travel on 10/12 and 10/14.

ASSISTANT: The AA airline with flight number 1027 is available having price as 200 and connection as 1.

USER: Ok, please confirm my booking.

ASSISTANT: Ok, your reservation is done.

USER: Thank you.

ASSISTANT: My pleasure.