You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is George Lee.

ASSISTANT: How can I  help you?

USER: I am looking to booking a flight ticket to meet my friend in Denver. Can you help me for booking a flight ticket from HOU to DEN?

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

USER: My travelling dates are July 21 and July 23.

ASSISTANT: Do you have any specifications?

USER: I need a single connecting flight.

ASSISTANT: I found a flight for you with price of 200 in economy class, flight number is 1018 and connection is 1. Is it ok for you?

USER: Ok, please proceed for booking.

ASSISTANT: I confirmed your ticket successfully.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.