You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Richard Jones.

ASSISTANT: How can I help you at this moment?

USER: Can you help me in booking a ticket from IAD to OAK?

ASSISTANT: Sure, can you please provide your travelling dates?

USER: My planning dates are from 12/17 to 12/19.

ASSISTANT: Give me a moment please.

USER: Sure.

ASSISTANT: Delta airlines is available on this route with a ticket fare of 100, shall I book your ticket?

USER: That's great, please proceed.

ASSISTANT: Richard Jones, your ticket is booked with flight number 1015.

USER: Thank you for your help.

ASSISTANT: Thank you, have a safe journey.

USER: You are welcome.