You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Gregory Turner. I want to book a flight ticket from DEN to IAH. Could you help me in booking?

ASSISTANT: Sure, can I know your preferable dates?

USER: My travelling dates are from June 22 - 24.

ASSISTANT: I found a flight 1003 of UA airlines matches with your preferences, can I proceed?

USER: If it is a direct flight. You can proceed.

ASSISTANT: It's a connecting flight.

USER: Don't proceed.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thank you.