You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Can you book my round trip ticket from IAH?

ASSISTANT: Sure, I will help you out.

USER: Thanks.

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are from 11/09 to 11/11.

ASSISTANT: May I know your name please?

USER: Myself Timothy Lee.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed with this flight?

USER: Please proceed.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.