You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you help me to book a flight ticket for the dates Sept 19 and 21?

ASSISTANT: Sure, I can do that. May I know your name?

USER: Ok, please book on the name Gary Taylor.

ASSISTANT: May I know your source and destination airport codes?

USER: Ok, please book from the airport IAH to LGA.

ASSISTANT: Ok, is there any specifications?

USER: Ok, please book a connecting flight.

ASSISTANT: There is a connecting flight available with UA airlines and the ticket fare is 100 only. Flight departs at 20:00 hours and arrives at 9:00 hours. Can I book the ticket for you?

USER: Ok, please book the ticket for me.

ASSISTANT: Your ticket is booked successfully with the flight-1019 in economy class.

USER: Thank you for the assistance.

ASSISTANT: You are welcome and thank you for choosing us.