You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you help me to book a flight from PHX at evening flight?

ASSISTANT: Yes, I am willing to help you. May I know when you want to travel?

USER: My travelling dates are Mar 18 and 20.

ASSISTANT: Ok, do you need any break in between the journey?

USER: I prefer connecting flight.

ASSISTANT: Please share your name.

USER: Sure, my name is Carolyn Clark.

ASSISTANT: Ok, can I know where you want to reach from PHX?

USER: Please book a flight to DEN.

ASSISTANT: Please share if you have any other  specifications.

USER: I did not have any requirements.

ASSISTANT: Ok, wait a minute please I will get back to you.

USER: Ok.

ASSISTANT: Thank you for your time, sorry no flights found with your details.

USER: No issues, thank you for your time.

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