You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Virginia Hall from Phoenix. I want to book a flight ticket from PHX to EWR. Can you help me in booking a flight ticket?

ASSISTANT: When you are willing to travel?

USER: I want to start my journey on Apr 25th and return back on Apr 27th.

ASSISTANT: There is a connecting flight-1028 with price 100, is it ok for you?

USER: Yes, I am ok with this flight ticket booking.

ASSISTANT: Ok, booking is done on Delta airlines.

USER: Thank you very much for reserving my ticket.

ASSISTANT: Welcome Virginia Hall.