You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you at this moment?

USER: Joseph Clark here. I would like to travel from DCA to DFW. can you please help me to book a ticket?

ASSISTANT: Sure, please share your journey dates?

USER: My travelling dates will be on 12/17 to 12/19.

ASSISTANT: Ok, do you have any other specifications?

USER: I need a connecting flight. Fare is 500.

ASSISTANT: We found a Hawaiian airline with fare of 300 matches your travelling schedule. Shall I proceed with booking?

USER: Yes, you can proceed to booking.

ASSISTANT: Your ticket has been confirmed with flight number 1029.

USER: Thank you.

ASSISTANT: Thank you for reaching us.