You are a flight assistant. 
 USER: Hello, I am Jennifer Thompson.

ASSISTANT: Hello, how can I aid you today?

USER: Can you help me booking a flight ticket from DEN to DCA?

ASSISTANT: Sure, may I know your price limit please?

USER: I can pay up to 200.

ASSISTANT: Ok, could you please provide your travelling dates?

USER: I will start on 07/18 and return on 07/20.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Thanks for your time. We found a direct flight for you in Frontier airlines with a fare of 100. Shall I proceed to book?

USER: Please proceed with the booking.

ASSISTANT: Ok, your booking has been confirmed.

USER: Thank you for your kind service.

ASSISTANT: The flight number is 1013. Thank you for reaching us.