You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best can I guide you today?

USER: Please help me to book a connecting flight from DC to take a part in Trekking in Evans mountain at TX.

ASSISTANT: Sure, please share your trip dates?

USER: Sure, I am planning to start my journey on 09/11 and my return date will be on 09/13.

ASSISTANT: Do you need a connecting flight?

USER: I need a connecting flight for this time.

ASSISTANT: Please share your airport codes?

USER: IAD and HOU are my exact airport attributes.

ASSISTANT: Can I know your good name?

USER: I am Thomas Allen.

ASSISTANT: Thank you for your details, we found  connecting flight 1006 in economy class which is in Southwest airline.

USER: You can reserve it.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting us.