You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: Please reserve me a flight ticket from IAD to HOU.

ASSISTANT: Sure, can you please mention with your dates of journey?

USER: My travel dates are Mar 08 and Mar 10.

ASSISTANT: Do you have any other specifications from my side please?

USER: I prefer connecting flight for this trip.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: May I know your name please?

USER: I am Benjamin Hernandez.

ASSISTANT: Sorry Hernandez, there is no flight found as per your travelling details.

USER: No problem, thank you for the information.

ASSISTANT: You are welcome.