You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Robert Nelson, want to travel from SEA to DCA. Please help me in this.

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

USER: My trip date are from 01/10 to 01/12.

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 Delta airlines. Would you like to book this flight for your journey?

USER: Please proceed.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you.

ASSISTANT: Most welcome.