You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Donald Mitchell here.

ASSISTANT: How may I assist you at this moment?

USER: I want to travel from Houston to New York for attending a seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am oblige to help you with that. Can you please provide you please provide your preferable dates to go there?

USER: My travelling dates are from 08/08 to 08/10.

ASSISTANT: Ok, may I know your origin and destination airport codes for booking?

USER: My airport codes are from HOU to EWR. Make sure my connections limit is 0.

ASSISTANT: Please wait a moment to check the flights availability in your route.

USER: Ok, I will wait.

ASSISTANT: Sorry to inform you that, there are no direct flights moving to your region with your planned dates of travelling.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for approaching us, have a great day.