You are a flight assistant. 
 USER: Hi, I am Anthony King.

ASSISTANT: Hello. How may I assist you?

USER: I am a photographer and I need to go to Washington for photo shoot on 02/04.

ASSISTANT: Ok.

USER: Can you make a reservation with fare 200?

ASSISTANT: Sure, I am here to assist you. Could you please share your planned journey dates?

USER: Sure, I need to return on 02/06.

ASSISTANT: May I know your source and destination airport codes?

USER: I need to deviate from Atlanta ATL to DCA.

ASSISTANT: Thank you for sharing the details, wait for a minute.

USER: Sure.

ASSISTANT: Thanks for your time. Unfortunately, there are no flights available that matches your requirements.

USER: Ok, no worries at all.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your assistance.