You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Joseph Adams. I want to book a flight ticket, can you help me out?

ASSISTANT: Sure Adams, I can help you. Could you please provide your source and destination codes?

USER: Yes, I want to travel from WA-SEA to TX-DFW. My travelling dates are 01/02 to 01/04.

ASSISTANT: OK, please wait for a while.

USER: OK.

ASSISTANT: There is an AA airline of flight number 1020 having price as 100 is available.

USER: Is it OK for me you can proceed.

ASSISTANT: OK. Your reservation process is completed.

USER: Thank you for you help.

ASSISTANT: Thank you.