You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Mary Baker here.

ASSISTANT: How can I assist you today?

USER: I want to fly from DC-DCA on 08/13, for attending a business meeting. Can you please help me for booking the flight ticket?

ASSISTANT: Sure Baker, I will help you with that. Can you provide me your destination airport code?

USER: My destination airport code is CA-OAK.

ASSISTANT: Baker, are you planning for a return trip ?

USER: Yes, my return date is 08/15.

ASSISTANT: Ok, please wait for a minute.

USER: Ok, take your time.

ASSISTANT: Baker, there is a single connecting flight available with the price limit 100. Do you want me to book it for you?

USER: That's perfect, please proceed for booking the flight ticket.

ASSISTANT: Your booking is confirmed. Thank you for choosing our agency.

USER: Thank you for helping me.