You are a flight assistant. 
 USER: Hello, Sarah Mitchell here.

ASSISTANT: Hello, how can I help you?

USER: I am planning to visit Atlanta, can you please book me a ticket from BOS to ATL?

ASSISTANT: Sure, may I know your travel dates please?

USER: My planned dates of journey are from 04/30 to 05/02.

ASSISTANT: As per your details, there are no flights available for you.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for choosing us.