You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I aid you today?

USER: Can you book a direct flight to Denver, DEN to attend an emergency meeting at my head office?

ASSISTANT: Sure, we are glad to assist you. When did you schedule your journey?

USER: I have to be there on 02/29, so book a flight on 02/28. I intend to arrive on 03/01.

ASSISTANT: Where are you heading from?

USER: I will fly from Washington,DCA.

ASSISTANT: Thanks for waiting. Let me know your name.

USER: I am Thomas Brown.

ASSISTANT: Are you comfortable to travel in connecting flight?

USER: No, do not proceed.

ASSISTANT: Ok.

USER: Thanks for assisting me.

ASSISTANT: Thank you for reaching us. Have a cheerful day.