You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you today?

USER: I want to book a flight ticket to Dallas TX-DFW, help me in booking my flight ticket from Philadelphia PA-PHL.

ASSISTANT: Sure, please share your travelling dates to check the availability of flights.

USER: Please check the availability of flight from 12/09 to 12/11.

ASSISTANT: Sure, may I know your connection limit please?

USER: I need a connecting flight, as I need to meet my friend in between my journey.

ASSISTANT: Ok, do you need economy or business class?

USER: I am comfortable with any class.

ASSISTANT: We found a Spirit airline with fare of 100 and a stop over in between the journey matches your schedule. Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed with 1010 flight number.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: Helen Hernandez here.

ASSISTANT: Thank you for approaching us.