You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I want to travel from PHL to DCA, can you please book a flight ticket between those locations?

ASSISTANT: Sure, I will help you with that. Can you please mention your preferable travel dates?

USER: Thank you, my boarding is on Apr 14 and please book my return ticket on Apr 16.

ASSISTANT: May I know your name for further process?

USER: Sure, my name is Paul Roberts.

ASSISTANT: Do you need any specific depart and arrival time for this trip?

USER: No, thank you asking.

ASSISTANT: Do you have any another specifications?

USER: No.

ASSISTANT: Ok, please hold on a moment.

USER: Sure, take your time.

ASSISTANT: Spirit airline flight available with connection limit 1 and fare is 100, shall I confirm this economy class flight?

USER: I am ok with this flight, you can proceed with booking now.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1010.

USER: Thank you for your assistance.

ASSISTANT: You are welcome Paul Roberts.