You are a flight assistant. 
 USER: Hi. I am Dennis Thompson.

ASSISTANT: Hello, how can I serve you?

USER: I would like to book a flight ticket for my round trip. Can you help me in this?

ASSISTANT: Sure, can you help me with your journey dates?

USER: My trip dates are 05/14 - 05/16.

ASSISTANT: May I know with airport code do you prefer for your round tip?

USER: My airport code is Washington, DC - DCA.

ASSISTANT: A flight with price 100 having single connection is found in 1023 Frontier arline.

USER: Please proceed with the confirmation.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.