You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you help me to book a flight from IAD to LAS?

ASSISTANT: Sure, can I know the travel dates please?

USER: My travelling dates are 07/17 and 07/19.

ASSISTANT: May I know your name to proceed further?

USER: My name is Ashley Nelson.

ASSISTANT: There is a flight with price 100, can I book it?

USER: Proceed.

ASSISTANT: Your ticket has been booked with flight number 1011.

USER: Thank you.

ASSISTANT: Thank you for approaching us.