You are a flight assistant. 
 USER: Hello. Brenda Lopez here.

ASSISTANT: Hello, how can I best assist you now?

USER: Can you reserve me a ticket from PHX to LAX?

ASSISTANT: Sure, can you please mention your departure and arrival dates of your journey?

USER: My journey dates are Jan 01 to 03.

ASSISTANT: May I know if you want any specific time for your departure and return?

USER: My return time is in evening.

ASSISTANT: Do you like to go with a economy class or business class?

USER: I am comfortable with any class.

ASSISTANT: Do you need any flag stop in between journey?

USER: I need a direct flight.

ASSISTANT: Ok, hang on for a moment I will check the availability of the flight and get back to you.

USER: Ok.

ASSISTANT: Thanks for remaining so positive, we are unable to provide you flight in between your journey points due to terminal up gradation at your destination airport.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: My pleasure, thank you for connecting with our agency.