You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Please book a flight ticket from PHL to DEN.

ASSISTANT: Sure, I am happy to help you. Can I have your travelling dates?

USER: My trip is in July from 27th to 29th.

ASSISTANT: Do you have any break in between journey?

USER: I am fine with any flight.

ASSISTANT: Is there any other specifications for you?

USER: I prefer to travel on well known airlines.

ASSISTANT: May I know your good name?

USER: I am Kimberly Adams.

ASSISTANT: Thanks for providing details, there is a connecting flight found in United Airlines with a fare of 100 which departs and return at 12:00. Shall I proceed for booking?

USER: Yes, please proceed.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1000.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.