You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I useful to you?

USER: Please book me a flight ticket from JFK to DEN to meet my family.

ASSISTANT: Sure, may I know your planned travel dates?

USER: I have planned to travel on July 10th and return on July 12th.

ASSISTANT: Do you have any limits on number of connections?

USER: I prefer one connection limit.

ASSISTANT: Do you have any another specifications on your journey?

USER: No, thanks.

ASSISTANT: May I know your name for the booking process?

USER: Patricia Perez.

ASSISTANT: Sorry, no flights are available on your route.

USER: Ok, no problem. Thank you.

ASSISTANT: Welcome, thank you for reaching us.