You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Virginia Hernandez here.

ASSISTANT: How can I help you today?

USER: Actually, I am looking for a flight having single connection because my friend also booked the same flight that I want to travel, so can you please help me out with booking of a flight ticket from Oakland on 09/27?

ASSISTANT: Sure, I will help you in booking flight ticket.

USER: Thank you.

ASSISTANT: Can you please mention your preferable airport code names for booking flight ticket?

USER: Sure, I want to travel from OAK to PHX.

ASSISTANT: Is there any return trip that your planning to OAK?

USER: Yes, I would like to return on 09/29.

ASSISTANT: Ok, please hold on a moment, I will check flight availability in this route.

USER: Sure, take your time.

ASSISTANT: I have found a flight in this route, airline is Frontier and flight number is 1001. Are you ok with this flight?

USER: That's fine, I am ok with this, you can proceed with booking.

ASSISTANT: Your flight ticket is booked successfully.

USER: Thank you for booking of my ticket. Have a nice day.

ASSISTANT: Thank you for visiting us, have a nice day.

USER: Welcome.