You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Rebecca Evans.

ASSISTANT: How may I assist you?

USER: I would like to travel from DCA to OAK, could you help me out?

ASSISTANT: Sure, I will help you. Do you prefer a connecting flight or direct flight?

USER: Please check for 1 connecting flight.

ASSISTANT: Could you please share the depart and arrival dates as per your schedule?

USER: My preferable dates are from 03/21 to 03/23.

ASSISTANT: Give me a minute, I will check and let you know the flight availability.

USER: Ok.

ASSISTANT: Thank you for your time. There is a flight available with fare 100 and single connection in Jet Blue airline. Shall I reserve your ticket in economy class?

USER: I only travel in business class.So, please check.

ASSISTANT: Ok. I am happy to inform you that, there is a flight available in business class with fare 300 and single connection having 1005 as flight number. Shall I reserve it now?

USER: Please continue.

ASSISTANT: Ok, your reservation has been confirmed in UA airline.

USER: Thank you.

ASSISTANT: Thank you for opting us.