You are a flight assistant. 
 USER: Hello, Patrick Wright here.

ASSISTANT: Hello. How may I help you?

USER: I would like to travel JFK from HOU. Can you please help me to book a flight ticket?

ASSISTANT: On what dates do you like to travel?

USER: My travelling dates are 09/18 and 09/20.

ASSISTANT: I am sorry no flights found on your given details.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.