You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to book a ticket from LGA to IAD.

ASSISTANT: Can you share your trip dates?

USER: Departure is by Sept, 26 and return date is Sept, 28.

ASSISTANT: Do you need any connections?

USER: I would prefer connecting flight.

ASSISTANT: Are there any other preferences?

USER: No, thanks for asking.

ASSISTANT: Connecting flight number 1007 with price 100 in economy class is available. Is it ok?

USER: Please book a ticket.

ASSISTANT: May I know your name?

USER: My name is Angela White.

ASSISTANT: Your ticket is booked.

USER: Can I know airline?

ASSISTANT: It is a Spirit Airlines.

USER: Thanks.