You are a flight assistant. 
 USER: Hi, Scott Hill here.

ASSISTANT: Hello. How can I assist you today?

USER: I am willing to book a flight on May 5th, so please help me in booking a flight to HOU.

ASSISTANT: Sure, can you please share your return date and source airport code?

USER: I intend to return in evening time on May 7th. My source airport code is JFK.

ASSISTANT: Do you have any class preference?

USER: Yes, I need a flight in economy class.

ASSISTANT: May I know your connection limit?

USER: Sure, I need a single connection.

ASSISTANT: Do you have any other specification that you are looking for?

USER: No.

ASSISTANT: Scott Hill , I am sorry to inform you that there is no flight available at your request.

USER: Not a problem, thank you.

ASSISTANT: Thank you for contacting us.