You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be of your helping hand?

USER: Can you help me in booking my flight ticket from DCA to LAS?

ASSISTANT: Sure, help me with the trip dates?

USER: My trip dates will be July 10th to July 12th.

ASSISTANT: Do you have any preferences?

USER: I prefer a connecting flight.

ASSISTANT: May I know your name please?

USER: I am Frank Collins.

ASSISTANT: We found a flight in an airline Delta with 1004 number having a single connection price of 100 in an economy class. Shall I proceed to book?

USER: You can proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.