You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am looking to book a flight ticket from LAS to IAH. Can you help me for that?

ASSISTANT: Please share your trip dates.

USER: My travelling dates are Feb 21 and Feb 23.

ASSISTANT: Do you need any connection limit?

USER: I need a single connecting flight.

ASSISTANT: If you have any any other specifications?

USER: My depart time is morning.

ASSISTANT: May I know your name?

USER: My name is Amanda Martin.

ASSISTANT: There are no flights available on your routes.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for choosing us.