You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I am planning a trip to New York to meet my buddies, can you please help me to book a flight from Houston?

ASSISTANT: Sure, May I know the journey codes?

USER: I will fly from HOU to JFK.

ASSISTANT: Please help me with your travelling dates.

USER: I will start on May 15th and will return back on May 17th.

ASSISTANT: Do you have any connection limit?

USER: I am fine with one connecting flight.

ASSISTANT: Is there any other requirements?

USER: I am looking for a business class.

ASSISTANT: May I know your name?

USER: My name is Nicolas Evans.

ASSISTANT: Please wait a moment.

USER: Sure,.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: No problem, thank you.

ASSISTANT: Thank you for availing us.