You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to visit Central Park at New York, could you please help me with booking a flight ticket from HOU to JFK?

ASSISTANT: Yes, can you tell me your dates of travel?

USER: I would like to depart on Dec 11th and return on Dec 13th.

ASSISTANT: Do you have any other preferences?

USER: I am looking for a direct flight.

ASSISTANT: Can I know your name?

USER: I am Margaret Jackson.

ASSISTANT: Sorry to inform you that there are no flights found on your requested criteria.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.