You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: John Parker here. I am a chemistry professor, I have to give a guest lecture. So please book my ticket from PHX to OAK.

ASSISTANT: Sure, please share your trip dates?

USER: My itinerary dates are Aug 20 and Aug 22.

ASSISTANT: Ok, would you like a pause in your journey professor?

USER: I need a connecting flight.

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

USER: I am comfortable in any class. Make sure my return flight is in the afternoon.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: We found a connecting flight with Southwest Airlines which returns at 12:00PM  having an economy class with flight number 1015. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your booking is confirmed with fare 300.

USER: Thank you for your service.

ASSISTANT: Thank you for connecting with us.