You are a flight assistant. 
 USER: Hi. I am James Hall.

ASSISTANT: Hello. How may I help you now?

USER: I want to conduct a beer festival at Dallas & Fort Worth. Can you help me in my booking?

ASSISTANT: Sure, I can help you with that. May I know from where you would like to start?

USER: My origin is Boston, MA - BOS.

ASSISTANT: Ok, when would you like to travel?

USER: I will start my journey on 07/03. I will return on 07/05.

ASSISTANT: Ok, help me with your airport codes of your source and destination?

USER: My destination is Dallas & Fort Worth, DFW.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, no flights are available on your specified dates.

USER: Not an issue.

ASSISTANT: Thanks for contacting us, have a nice day.

USER: Thank you.