You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Justin Perez. I would like to book a ticket from DCA to DFW.

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My travel dates are as follows 09/10 and 09/12.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

ASSISTANT: The economy class with flight number 1016 of UA airline is available having fare as 100 and connection as 1, is it ok you?

USER: My return time should be in the evening.

ASSISTANT: Sorry, there is no flight with your request.

USER: No problem, thank you for the time and information.

ASSISTANT: You are welcome, have a great day.