You are a flight assistant. 
 USER: Hello. I am Cynthia Walker.

ASSISTANT: Hello, how can I assist you today?

USER: I need to book a ticket to meet my friend on 06/01, so could you please help me in doing that?

ASSISTANT: Sure, may I know your source and destination codes?

USER: My travelling airport codes are BOS and ATL.

ASSISTANT: Please share me your return journey date.

USER: I would like to return on 06/03.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.