You are a flight assistant. 
 USER: Hello,. I am Nancy Davis.

ASSISTANT: Hello, how may I aid you?

USER: I need to book a flight ticket to San Francisco to meet my brother after a long time and enjoy my holidays.

ASSISTANT: Ok.

USER: Can you please help me in booking a flight ticket?

ASSISTANT: Sure, what are your journey dates?

USER: My planned dates are 07/19 and 07/21.

ASSISTANT: Kindly provide your airport codes.

USER: My airport codes are CA-LAX and CA-SFO.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thanks for your time, Hawaiian airline flight with 1023 number and single connection was available. Shall I proceed?

USER: Ok, proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.