You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Katherine Lewis here. I want to travel from DCA to OAK for attending a seminar.Can you please help me for booking a ticket?

ASSISTANT: Yes, can I know your journey dates?

USER: My planning dates are from  07/13 till 07/15.

ASSISTANT: Ok, give me a moment.

USER: Ok, take your own time.

ASSISTANT: I have got a flight for you with a fare of 100 and a connection of 1. Can I book the ticket for you?

USER: Yes, proceed.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for booking.

ASSISTANT: You are welcome.