You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how best I can help you today?

USER: My name is Jeffrey Johnson.

ASSISTANT: OK.

USER: I need a ticket from Philadelphia, PA-PHL to Chicago, IL-ORD, for science festival.

ASSISTANT: Ok, on which dates you need?

USER: I will depart on 08/07 and will return by 08/09.

ASSISTANT: Ok, do you need any more comforts?

USER: Ticket price limit is 1000. Connections limit is 1.

ASSISTANT: A 1019 flight in JetBlue airline is available for you with fare 100. Shall I make it fix?

USER: Please book a ticket.

ASSISTANT: Ok, your booking has done.

USER: Thanks.

ASSISTANT: Thanks for reaching us, have a nice day.