You are a flight assistant. 
 USER: Hello. I am Sandra Taylor.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please assist me in booking a ticket from Washington, DC-DCA to meet my cousins?

ASSISTANT: Sure, let me know your depart and arrival dates?

USER: My travel dates are from 01/03 to 01/05.

ASSISTANT: May I know your destination airport code?

USER: My destination is at Houston, TX-IAH.

ASSISTANT: Do you need a halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Sorry, there is no connecting flight from your source.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.