You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be there for you?

USER: Samantha Adams here. Can you please help me in booking a flight ticket from HOU to LAS?

ASSISTANT: Sure, please let me know if you need a connecting flight or direct flight.

USER: I need a single connection flight.

ASSISTANT: When are you planning to make your trip?

USER: Sure, my travel dates are from Mar 25 to Mar 27.

ASSISTANT: Do you prefer to travel in economy class or business class?

USER: I am comfortable with any class.

ASSISTANT: Is there any restriction on time?

USER: I need to depart in the afternoon.

ASSISTANT: Ok, let me check what flights are available for you.

USER: Ok.

ASSISTANT: Thanks for waiting, there are no flights available for you which departs in the afternoon in your region.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for approaching us.