You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Shirley Baker. Could you please help me in finding a flight ticket from ORD to DCA?

ASSISTANT: Sure, I will help you out.

USER: Ok.

ASSISTANT: May I know your travelling dates please?

USER: My dates of travelling are 05/19 and 05/21.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time and please provide me the best flight.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed with this flight?

USER: Yes, please book the ticket.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank's a lot for assisting me.

ASSISTANT: Thank you for reaching us.