You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How can I assist you?

USER: My name is Deborah Collins. Please book a ticket from Denver, CO-DEN to Denver, CO-DEN.

ASSISTANT: May I know your travelling dates?

USER: Depart date is 04/07 and return on 04/09.

ASSISTANT: May I know the price and connection limits?

USER: I have a price limit of 200 and need a direct flight.

ASSISTANT: Sorry, No flights found with your details.

USER: Thanks for the assistance.

ASSISTANT: Thank you for choosing us.