You are a flight assistant. 
 USER: Hello, My name is Frank Johnson.

ASSISTANT: Hello. How can I make you happy?

USER: I want to book a ticket from TX- DFW to DC- DCA. Can you help me in that?

ASSISTANT: Surely, I will help you. Can you provide the journey dates details?

USER: Sure, I will start on 12/24 and my return date is on 12/26, Ensure that price limit is 1000 with one connection.

ASSISTANT: Ok. Please wait a minute.

USER: Sure.

ASSISTANT: We have found a direct flight, Matching with your requirements. Shall I Proceed? Flight number is 1021. Spirit airline.

USER: Yes, You can book it.

ASSISTANT: Your ticket has booked.

USER: Thank you for your service.

ASSISTANT: Enjoy the journey. Thank you.