You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you help me to book a flight ticket from Phoenix, PHX to Los Angeles, LAX?

ASSISTANT: Sure, We are here to help you. Can I know your travelling dates?

USER: Yes, my dates are Sept 5th and Sept 7th respectively.

ASSISTANT: Do you need any break?

USER: Yes, I need a connecting flight.

ASSISTANT: May I know your name?

USER: My name is Ruth Edwards.

ASSISTANT:  Is there any other requirements for this trip to met with, so that I can find a suitable flight for your journey?

USER: Ok, please check for the flight which return timing is during afternoon.

ASSISTANT: Ok. Please wait a while.

USER: Sure.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you for reaching us.