You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I need to reserve a ticket from LAS to DFW, can you help me?

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

USER: My trip dates are May 12 to 14.

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

USER: I need a single connecting flight.

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

USER: No.

ASSISTANT: May I know your name please?

USER: Jacob Hall here.

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

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Welcome, thank you for reaching us.