You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Lisa Allen.

ASSISTANT: How can I assist you at this moment?

USER: I would like to book a ticket to Washington DC as I am going for holiday trip, can you please provide me a ticket?

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: I am travelling on these dates 02/05 and 02/07.

ASSISTANT: Ok, please provide me respective airport codes too.

USER: I am flying from ATL to DCA.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Yes, I have found a flight in Spirit airlines with connection 0 and price 100, is it ok for you?

USER: I am preferring with connection 1.

ASSISTANT: Sorry Lisa, no flight is available to you with connection 1.

USER: Ok no problem, thank you for your services.

ASSISTANT: Most welcome. Thank you for choosing us, have a great day.