You are a flight assistant. 
 USER: Hello!.

ASSISTANT: Hello,how may I help you?

USER: My name is Jeffrey Collins,can you please help to book my ticket from DC-IAD to PA-PHL?

ASSISTANT: Sure,will you provide me the dates for travelling.

USER: 05/02 and 05/04 are my travelling dates?

ASSISTANT: Just hold on. There is a flight with your provided details. Do you have any price and connection limits?

USER: Yes my connection limit is 1 which do not exceed the price of 200.

ASSISTANT: Exactly,this flight matches with your details.

USER: OK, can you please tell me the flight details.

ASSISTANT: The flight number is 1004 from Frontier airline.

USER: OK, you can proceed .

ASSISTANT: OK,your ticket has been booked.

USER: OK,thank you.