You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Jason Martin here.

ASSISTANT: How may I assist you Jason?

USER: Reserve a flight ticket that is from OAK to IAD.

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: My travel dates are 11/12 to 11/14.

ASSISTANT: Ok, please wait a moment to check the flights.

USER: Sure.

ASSISTANT: Based on your information, I have found a flight with 0 connections with the fare of 200. Is it ok for you?

USER: I need a connecting flight.

ASSISTANT: Sorry, there are no flights available with connection 1.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us, have a great day.