You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

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

ASSISTANT: Sure, could I have your journey dates, please?

USER: My trip dates are Sep 17 to 19.

ASSISTANT: May I know your good name?

USER: Stephen Allen here.

ASSISTANT: Please let me know your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flights available as per your requirements.

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

ASSISTANT: Thank you for choosing us.