You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Donald Garcia here.

ASSISTANT: In which way I can aid you at this moment?

USER: I would like to visit Los Angels to meet my old friend there, can you please help me out with booking of a flight ticket?

ASSISTANT: Sure, I am happy to help you in booking flight ticket. Could you please let me know your preferable travel dates for booking flight ticket?

USER: Thank you. I am planning to leave on 12/25 and please book my return ticket on 12/27.

ASSISTANT: Can you please mention your airport code names for further process?

USER: I want to travel from EWR to LAX.

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

USER: Ok, take your time.

ASSISTANT: Based on your information, Hawaiin airline is ready to serve you with 1 connection with a minimum fare of 100 is available for you. Shall I proceed with this?

USER: I am ok with this, you can proceed with booking.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1021.

USER: Thank you for your help in booking of my ticket.

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

USER: Welcome.