You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Amanda Williams, can you help me to book from PHX to DFW?

ASSISTANT: I am here to help you about that. Can you please provide your planned dates of journey?

USER: My travelling dates are 12/17 and 12/19.

ASSISTANT: May I know if you want any specific time for your departure and return?

USER: I want to return at morning.

ASSISTANT: Do you need any connected flight for your journey?

USER: I need a connecting flight.

ASSISTANT: Sorry to say this Amanda Williams, there are no flights which travels on your route.

USER: No issues, thank you for your time.

ASSISTANT: You are welcome, thank you for reaching our service.