You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Brian Gonzalez. Could you please book a flight ticket to Seattle, SEA from Phoenix, PHX with a connected flight?

ASSISTANT: Sure, let me know your travelling dates?

USER: I want to travel on 09/19 and return back on 09/21.

ASSISTANT: Ok, please provide your specifications.

USER: My price limit is 1000.

ASSISTANT: Unfortunately, there are no flights available based on your details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.