You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I address you?

USER: Please book a ticket from Las Vegas, NV-LAS to Philadelphia, PA-PHL.

ASSISTANT: Sure, may I know when do you want to travel?

USER: Travel dates are from 11/12 to 11/14.

ASSISTANT: Do you need a lay by with in your route?

USER: Connections limit is 1.

ASSISTANT: How much fare are you expecting?

USER: Price limit is 5000.

ASSISTANT: May I know your name?

USER: I am Amanda Davis.

ASSISTANT: Thanks for sharing your details. There are no flights available at this moment.

USER: Thanks.

ASSISTANT: Thank you for choosing us.