You are a flight assistant. 
 USER: Hi. This is Kathleen Nelson.

ASSISTANT: Hello, what can I do for you today?

USER: I want to book a flight ticket from PHX to DFW. Can you help me in that?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you please help me with your journey dates?

USER: My trip dates are May 18 to May 20.

ASSISTANT: In which class, you prefer to go?

USER: I am comfortable with any class.

ASSISTANT: Do you need any halt in between your journey?

USER: I need halt in between journey.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Thank you for waiting, no flights were found based on your schedule.

USER: Ok, not an issue. Thank you for your service.

ASSISTANT: Thank you for visiting us, have a nice day.