You are a flight assistant. 
 USER: Hi. I am David Jackson.

ASSISTANT: Hello, how may I assist you?

USER: Can you please reserve me a flight ticket from LAS to ORD?

ASSISTANT: Sure, may I know your travel dates?

USER: My trip dates are 06/29 - 07/01.

ASSISTANT: Do you have any specifications?

USER: I need a single connection.

ASSISTANT: Sorry, there were no flights found on your route.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us.