You are a flight assistant. 
 USER: Hello,. I am Betty Mitchell from Denver.

ASSISTANT: Hello, what sought of help are you seeking from us?

USER: I want to attend a business meeting at Washington, can you please book me a ticket with single connection?

ASSISTANT: Sure, may I know your itinerary dates?

USER: My itinerary dates are from 09/19 to 09/21.

ASSISTANT: From where do you want to start to reach Washington?

USER: I want to start my journey from Denver, CO-DEN to reach Washington.

ASSISTANT: Please provide your destination airport code?

USER: My destination airport code is DC-DCA.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: We found an airline Delta with fare 100 having a halt with flight 1003. Shall I proceed to book?

USER: It's perfect, now you can proceed to book.

ASSISTANT: Your booking has been processed.

USER: Thank you for your assistance.

ASSISTANT: Thank you for contacting us.