You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me in reserving a flight from LAS to reach all places at IAD?

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

USER: Thank you, my travelling dates are Aug 12th and Aug 14th.

ASSISTANT: Can you please share your name for documentation purpose?

USER: I am Jennifer Lopez.

ASSISTANT: Is there any connection limit?

USER: I prefer a single connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Jennifer Lopez, thee are no flights available in your route.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for choosing us.