You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a flight ticket to go for innovation festival at Washington, please help me with a connecting flight.

ASSISTANT: Can you please share me your airport codes?

USER: I want to fly from GA- ATL to DC- DCA.

ASSISTANT: May I know your good name please?

USER: I am Helen Lewis.

ASSISTANT: Please share me your travel dates.

USER: My depart date is on 03/27 and return date is on 03/29.

ASSISTANT: Unfortunately there is no flight on your details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thanks for choosing us.