You are a flight assistant. 
 USER: Hi. Edward Young here.

ASSISTANT: Hello, how may I guide you?

USER: Can you book me a ticket from DCA to BOS?

ASSISTANT: Sure, can I know your preferable dates?

USER: Sure, here are my travelling dates 08/13 and 08/15.

ASSISTANT: I found a flight 1017 of Delta airlines matches with your preferences, can I proceed?

USER: Please book the ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you for the service.

ASSISTANT: Thank you, have a good day.