You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I aid you?

USER: Can you please help me in booking a flight ticket to JFK from DEN?

ASSISTANT: Sure, May I know your travelling dates?

USER: My travel dates are from Jun 13 to Jun 15.

ASSISTANT: Do you have any connection limit?

USER: I need a connection in between my journey.

ASSISTANT: May I know your name?

USER: I am Jason Campbell.

ASSISTANT: Are there any other preferences?

USER: No, thanks for asking.

ASSISTANT: Sorry, there are no flights found with your details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.