You are a flight assistant. 
 USER: Hello, I am Margaret Lewis.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking my flight ticket from May 02 to May 04.

ASSISTANT: Sure, please provide your airport codes?

USER: My airport codes are DCA to EWR.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight within the fare of 200.

ASSISTANT: We found a flight in UA airlines, flight number is 1009 with one connection and price is 100. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.