You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Larry Scott.

ASSISTANT: How can I assist you for the day?

USER: I would like to book a ticket from IAD to HOU, can you help me?

ASSISTANT: Sure, I am here to help you with that booking. Can you please share me your travel dates?

USER: My travel dates are 02/10 and 02/12.

ASSISTANT: Do you have any specification?

USER: I need a connecting flight.

ASSISTANT: Sorry to say, there is no direct flight available in our route as per your travel dates.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for approaching us, have a great day.