You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: Can you please help me in booking a flight ticket to PHX from DFW?

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

USER: My travel dates are from 09/19 to 09/21.

ASSISTANT: Is there any connection limit?

USER: I need a single connecting flight.

ASSISTANT: May I know your name?

USER: I am Sharon Johnson.

ASSISTANT: Do you have any other preferences?

USER: No.

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

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.