You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, what can I do for you today?

USER: Please book me a ticket with the name Ryan Williams.

ASSISTANT: Sure Ryan, may I have your journey credentials please?

USER: My travelling dates are from Mar 5th to Mar 7th and want to travel from Philadelphia, PA- PHL, to Dallas ,TX-DFW.

ASSISTANT: OK, just hang on a moment. I will check and get back to you.

USER: OK.

ASSISTANT: Thanks for hanging on. A flight with flight number of 1017 of Spirit airline has matched your criterion. The price of the ticket is 100. Should I proceed for booking?

USER:  Sure, You can proceed with that airline.

ASSISTANT: Congratulation. Your flight has been booked. Have a great day.

USER: Thank you have a great day.