You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Christopher Harris.

ASSISTANT: How can I serve you?

USER: I am planning to celebrate the nature festival with my sister in Washington DC-DCA to explore the nature.Could you please book a flight ticket from NY-LGA?

ASSISTANT: Sure, on what dates you are willing to depart and arrive?

USER: I am willing to move on 08/28 and arrive on 08/30.

ASSISTANT: Ok, wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a connecting flight from Southwest airline of fare 100 and flight number 1012.

USER: Please proceed with the booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your great service.

ASSISTANT: Thank you.