You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be your help?

USER: Myself Barbara Young. I am looking for a flight from DFW to DCA, can you help me in booking the flight ticket?

ASSISTANT: Sure, please provide me your planned travel dates.

USER: Sure, my planned travel dates are Dec 12 and Dec 14.

ASSISTANT: Do you have any class preference?

USER: Yes, I am looking for a connecting flight. I don't need any class preferences for this journey.

ASSISTANT: Please let me know if you have any other preference.

USER: No.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait for your respionse.

ASSISTANT: We are happy to inform you that there is a flight from JetBlue airlines, number 1006 and it is costing 200. Shall I proceed with this flight?

USER: That's fine, please proceed in booking with this flight.

ASSISTANT: Your economy class ticket is booked.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us.