You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I would like to spend my free time at New York, please help me in booking a ticket from HOU to JFK.

ASSISTANT: Sure, I am happy to help you. Please, share me your travelling dates for your trip.

USER: My planned trip dates are on Apr 20 and Apr 22.

ASSISTANT: Do you have any connection limit for your journey?

USER: I need a flight with single connection.

ASSISTANT: May I know your class preference?

USER: I am comfortable with any class.

ASSISTANT: Let me know your airline preference for the trip.

USER: No, thank you for asking.

ASSISTANT: Can I know your departure and arrival timings?

USER: I am fine with any timings.

ASSISTANT: Please, share me your name to proceed further.

USER: My name is Gregory Lopez.

ASSISTANT: We regret to inform you that, there are no flights available as per your specifications.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for opting us.