You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to go to Dallas next month so can you please help me in flight ticket booking process from PHX to DFW?

ASSISTANT: Sure, when are you willing to travel?

USER: Thank you for your response, I want to take off on July 28 and book my return ticket also on July 30.

ASSISTANT: Do you have any preferences for this trip?

USER: I have only business class preference so please check with this details.

ASSISTANT: Let me know your connection limit?

USER: I don't have any connection limit. Can you please check is there any flight available with above details?

ASSISTANT: Ok, May I know your name please?

USER: Sure, my name is Kathleen Green.

ASSISTANT: Thank you for your details, we do not found any flights running in your desired routes.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.