You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I best serve you today?

USER: Can you please help me to book a flight from PHL to DEN?

ASSISTANT: Sure, can you please mention your depart and arrival dates of your journey?

USER: I want to travel on Oct 12 and need to return on Oct 14.

ASSISTANT: Do you like to go with a connecting or direct flight?

USER: I need a connecting flight.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: I do not have any other specifications.

ASSISTANT: Can I know your good name to proceed further?

USER: Sandra Williams here.

ASSISTANT:  There is a flight in United airlines with the ticket price of 100 having one connection and economy class. Can I proceed to booking?

USER: Ok, please proceed.

ASSISTANT: Your booking is confirmed and the flight number is 1003.

USER: Thank you.

ASSISTANT: Thank you for choosing us.