You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I want to travel from Phoenix to Las Vegas, can you help me with booking?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My travelling dates are June 11 and June 13.

ASSISTANT: Is there any connection limit?

USER: I need a lay by in between my journey.

ASSISTANT: Do you have any other specification?

USER: No.

ASSISTANT: May I know your name please?

USER: I am Brian Gonzalez.

ASSISTANT: Brian Gonzalez, there are no flights available in your route with your preferences.

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

ASSISTANT: Thank you for choosing us.