You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I need to reserve a ticket from LAS to IAH, can you help me in doing that?

ASSISTANT: May I know your trip dates?

USER: My trip dates are June 03 to 05.

ASSISTANT: Do you have any connecting limit preferences? Is there any other concern?

USER: I need a single connecting flight.

ASSISTANT: Ok. May I know your name please?

USER: Kenneth Robinson here.

ASSISTANT: No flights found as per your preferences in our database at the moment.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for choosing us.