You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Could you help me in booking a flight ticket from LAS to IAD?

ASSISTANT: Please provide your trip dates.

USER: I want to fly on Nov 14, return on Nov 16.

ASSISTANT: Do you need any connection limit?

USER: I want a flight with one connection.

ASSISTANT: Do you have any other specifications?

USER: My depart time should be morning.

ASSISTANT: May I know your name?

USER: My name is Jessica Harris.

ASSISTANT: There are no flights available on your routes.

USER: Not an issue, thank you.

ASSISTANT: Thank you for choosing us.