You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, by what way can I guide you?

USER: Please book a ticket from San Francisco, CA-SFO to Washington DC-DCA.

ASSISTANT: Ok. On whose name I have to book a ticket?

USER: Amanda Mitchell is the name.

ASSISTANT: Do you aid me with your journey dates?

USER: Departure date is 05/17 and 05/19 is return date.

ASSISTANT: Thank you for giving your precious time. You have a flight with 1 connection of price 100 in Delta airline. In 1017 flight.

USER: Please book a ticket.

ASSISTANT: Sure, ticket is confirmed.

USER: Thanks.

ASSISTANT: Thank you for picking us.