You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Catherine Smith here. I want to travel from JFK to HOU for attending  a Seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am here to help you out in that. May I know your travel dates to proceed further?

USER: My travelling dates are from 05/15 to 05/17.

ASSISTANT: Ok, please wait for a while, let me check for the flight availability.

USER: Ok, I will wait.

ASSISTANT: Sorry, there are no flights in your route as per your travelling details.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for approaching us.