You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a ticket from JFK to IAH, can you help me?

ASSISTANT: May I know your trip dates?

USER: My travel dates are Aug 18 and 20.

ASSISTANT: Do you prefer any specifications?

USER: I want to travel in normal cost airline with 1 connection.

ASSISTANT: Sorry, no flight is available for you as per your requests.

USER: No problem.

ASSISTANT: May I know your name?

USER: I am Steven Carter.

ASSISTANT: Thank you.

USER: Welcome.