You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ronald Evans from San Francisco.

ASSISTANT: How may I serve you today?

USER: I want to book  a flight ticket from CA-SFO, help me in booking my flight ticket to NV-LAS.

ASSISTANT: Sure, help me with the trip dates?

USER: 03/19 is my starting date, my return date will be 03/21.

ASSISTANT: Thank you for your details, we found a flight in an airline AA with 1003 number having a single connection price of 100. Shall I reserve?

USER: Please go ahead with booking.

ASSISTANT: Your flight ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us. Have a safe flight.