You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you help me in booking my flight ticket with a direct flight?

ASSISTANT: Sure, please share your travelling dates.

USER: My trip dates will be Aug 15th to Aug 17th.

ASSISTANT: Please share your airport codes, where you want to travel and catch the flight?

USER: I want to catch my flight from IAH, my landing point will be JFK.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: May I know your name?

USER: I am Ronald Wilson.

ASSISTANT: Sorry, there are no flights found based on your details.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.