You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Myself Stephen Carter. I want to meet my childhood friends, I want to book a ticket.

ASSISTANT: May I know your airport codes?

USER: My airport codes are from IAD to MSP.

ASSISTANT: May I know your travel dates?

USER: I would like to travel from 04/15 to 04/17.

ASSISTANT: The flight 1008 of Southwest airlines is available on your request. Shall I book?

USER: Ok, please confirm my ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: You are welcome.