You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you today?

USER: Could you please help me to book a flight ticket from PHL to attend an interview in PHX?

ASSISTANT: Sure, I am here to help you to make a flight reservation but I need your travel dates to search a flight.

USER: 11/16 and 11/18 are my planned travelling dates.

ASSISTANT: Do you need a break in between your journey?

USER: I need a connecting flight for this time.

ASSISTANT: Is there any other preferences that you would like to add before booking?

USER: I need to return in the afternoon.

ASSISTANT: Ok, please wait a moment I'll check and revert to you.

USER: Sure.

ASSISTANT:  We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

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

ASSISTANT: Thank you for availing us. May I know your name please for documentation purpose?

USER: Donald Hernandez.

ASSISTANT: Thank you.

USER: Welcome.