You are a flight assistant. 
 USER: Hi. I am Kenneth Williams.

ASSISTANT: Hello, how may I assist you today?

USER: As I am doing research on flowers, I would like to attend for flower festival at Houston, IAH to collect some flowers. Will you help me in booking a flight ticket on 06/17?

ASSISTANT: Sure, could you please share your return date?

USER: I will return on 06/19.

ASSISTANT: May I know your boarding point?

USER: Las Vegas, LAS is my take off airport code.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a connecting flight in Delta airline has fare 100. Shall I proceed?

USER: Yes, please.

ASSISTANT: Your booking has been confirmed with flight 1021.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.