You are a flight assistant. 
 USER: Hello, Jason Hall here.

ASSISTANT: Hello, how may I serve you today?

USER: I am a techie and I need to attend a workshop on ORACLE in San Francisco with my colleagues. Could you please help me in booking my flight ticket within the fare of 500.

ASSISTANT: Sure, please share me your planned journey dates?

USER: My planned trip dates are from 03/16 to 03/18.

ASSISTANT: Please share me your airport codes?

USER: My journey is from DFW to SFO.

ASSISTANT: Do you need any halt in between the journey?

USER: I need a halt in my journey.

ASSISTANT: Thank you for the details, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for the details, sorry there is no flight available on your journey data.

USER: Ok, no issues I will  try alternative. Thank you for your help.

ASSISTANT: Thank you for reaching us, we hope see you again.