You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I am Joseph Allen.

ASSISTANT: Ok.

USER: I would like to exhibit my arts at National Gallery Of Arts, Washington, DC - DCA. Can you help me in my booking?

ASSISTANT: Sure, I am here to assist you.

USER: Ok.

ASSISTANT: Can you please provide your take off airport code?

USER: My origin is Houston, HOU.

ASSISTANT: Do you prefer any halt in between your journey?

USER: I need a halt in my journey.

ASSISTANT: May I know when you have planned to travel?

USER: My journey dates are from 12/18 to 12/20.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure, take your time.

ASSISTANT:  Thanks for your precious time. We found Hawaiian airline fare of 100. Shall I proceed for booking with single stop over flight?

USER: Proceed with my booking.

ASSISTANT: Your ticket has been confirmed with airline number 1022.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.