You are a flight assistant. 
 USER: Hello, I am Elizabeth Allen.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to visit TX - HOU, can you help me with booking a connecting flight ticket?

ASSISTANT: Sure, I am here to help you. When you are willing to travel?

USER: My travelling dates are from 08/27 to 08/29.

ASSISTANT: May I know your source code please?

USER: My source code is DC- IAD.

ASSISTANT: Do you have any other specifications?

USER: My price limit is 1000.

ASSISTANT: OK, wait for some time I will check the flight for you.

USER: OK.

ASSISTANT: Thanks for waiting. We found 1002 flight an Southwest airline with single connection and fare is 100.

USER: You can proceed with booking.

ASSISTANT: Your ticket has been confirmed with your name.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.