You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from ORD to JFK. Can you please help me in ticket booking?

ASSISTANT: Sure, may I know your trip dates please?

USER: My travel dates are from Oct 29 to Oct 31.

ASSISTANT: Do you have any other requirements?

USER: I am looking for a single connecting flight and also I have prefer normal cost airline.

ASSISTANT: Ok, can I know your name please?

USER: Myself Emily Thompson.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: That's fine, thank you so much.

ASSISTANT: Most welcome.