You are a flight assistant. 
 USER: Hello. I am Donna Martin.

ASSISTANT: Hello, how may I help you at present?

USER: Can you please help me in booking a flight ticket from Washington, DCA to Chicago, ORD?

ASSISTANT: Sure, I can help you with that.

USER: Thank you.

ASSISTANT: Please share your dates of journey that you have planned to travel?

USER: I want to start my journey on 03/20 and planning to return on 03/22.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Thanks for being patient, there is a flight in Spirit airline with a fare of 500 is matching your criteria.

USER: I am comfortable with that airline, please confirm it on my name.

ASSISTANT: Sure, your booking has been confirmed successfully with 1016 flight.

USER: Thanks for your excellent customer service.

ASSISTANT: Thanks for availing our servces, have a nice day.