You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I am Katherine Walker. I want to book a ticket from Washington to Minneapolis to meet my cousin for his birthday.

ASSISTANT: Ok. May I know your travelling dates?

USER: Make a reservation on 07/25 and 07/27.

ASSISTANT: Can you share your airport codes?

USER: Airport codes are DCA - MSP. I need a direct flight.

ASSISTANT: There is a flight 1007 in Southwest airline and price 100 with a connection. Shall I proceed?

USER: Do not proceed. Thank you for availing me.

ASSISTANT: Ok, thanks for choosing us.