You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: Jacob Hernandez here. Can you please reserve me a ticket from OAK to visit PHX?

ASSISTANT: Sure, I can help you. Can I know your travelling dates?

USER: My planned trip dates are Jan 20th and Jan 22nd.

ASSISTANT: Do you need a break in the middle of your way?

USER: I need a single connecting flight.

ASSISTANT: Let me check the availability of flights and revert to you.

USER: Ok, sure.

ASSISTANT: We found a United airline, flight number:1000 and the price is 100.

USER: Ok, please proceed by booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.