You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I have a plan to visit to Dallas, can you render me in booking the flight from embark point that is SEA?

ASSISTANT: Sure, I am gleeful to help you in booking the flight ticket.

USER: Thank you.

ASSISTANT: May I know your destination airport code?

USER: My return flight airborne will be from DFW.

ASSISTANT: Ok, I need your travel dates to move further in booking the flight ticket.

USER: I want start my journey on 07/03 and disembark would be on 07/05.

ASSISTANT: Please wait for a while let me check for the best flight availability for your desired intents.

USER: Please confirm flight ticket on Emily Carter if you have any availability of the flight.

ASSISTANT: Thank you for the information.

USER: My pleasure.

ASSISTANT: Sorry Carter, as per your intents there are no flights available.

USER: That's ok, no problem. I try to reach my destination on time by any other source.

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

USER: Thank you for your information regarding the flight availability in my route.

ASSISTANT: You are welcome.