You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Please help me to book a flight ticket from JFK to HOU.

ASSISTANT: Sure, tell me your name please?

USER: My name is Jonathan Hill.

ASSISTANT: Now please share your travel dates?

USER: My travelling dates are from Oct, 14 to Oct, 16.

ASSISTANT: May I know your airline preference please?

USER: I need normal-cost airlines to fly.

ASSISTANT: Do you have any other preferences?

USER: I need a connecting flight that depart in the afternoon.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: Sorry presently there no flights available in the normal-cost airline.

USER: No problem, thanks for your information.

ASSISTANT: Thank you.