You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in booking a flight ticket from Houston, IAH to Las Vegas, LAS?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My journey dates are from Nov 12 to Nov 14.

ASSISTANT: Do you have any limits on number of connections?

USER: I need a lay by in between journey.

ASSISTANT: Do you have any another specifications on your journey?

USER: My depart time is evening.

ASSISTANT: May I know your name for the booking process?

USER: My name is Nicole Miller.

ASSISTANT: Sorry, no flights are available on your required dates.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Welcome, thank you for reaching us.