You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Will you help me to book a flight ticket from JFK to DEN?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My planned travel dates are July, 11 and July, 13.

ASSISTANT: Do you have any specifications?

USER: I am looking for connecting flight.

ASSISTANT: Let me know your name?

USER: Dennis Carter here.

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

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.