You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Larry Walker.

ASSISTANT: How may I assist you?

USER: I want to meet my project manager at Philadelphia, please help me to book my flight ticket from ATL to PHL.

ASSISTANT: Sure, I will help you. Can I have your planned journey dates please?

USER: Sure, I have to start my journey on May 16th and I need to return back in the evening on May 18th.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need single connection flight.

ASSISTANT: May I know your departure and arrival timings?

USER: I have mentioned you already.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: I found an economy class in Frontier airlines with fare 100 and it has single connection. Can I book your ticket?

USER: Yes, please book the ticket for me.

ASSISTANT: Ok, your booking is confirmed with flight number 1020.

USER: Thank you very much.

ASSISTANT: Thank you for reaching us.