You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to visit Washington to meet my brother, please help me in booking a ticket from SEA to DCA.

ASSISTANT: Sure, may I know your travelling dates please?

USER: My planned travel dates are 10/12 and 10/14.

ASSISTANT: There is a flight which can travel to your region having a single lay out in between your journey having a ticket fare of 100 which is provided by Frontier airlines. Would you like to book this flight for your journey?

USER: Ok, please book the ticket with the name Sarah Jones.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Most welcome.