You are a flight assistant. 
 USER: Hello, I am Anna Campbell.

ASSISTANT: Hello, how can I best serve you?

USER: I am heading from Atlanta to Boston to attend a comic con. Can you help me book a direct flight?

ASSISTANT: Sure, please forward your airport codes?

USER: My travel is from ATL to BOS.

ASSISTANT: When do you want to book a ticket?

USER: I need to leave on 11/11.

ASSISTANT: When would you like to return?

USER: I am planning to return on 11/13.

ASSISTANT: Please hold on. Thanks for waiting.

USER: Ok.

ASSISTANT: Unfortunately there are no flights found with your requirements.

USER: Thank you for your response.

ASSISTANT: Thank you for contacting us.