You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Could you please book a flight ticket from ATL to PHL?

ASSISTANT:  Sure, may I know your preferable dates of journey?

USER: My trip dates are July 19 and July 21.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Are there any other specifications?

USER: No.

ASSISTANT: Can I know your good name?

USER: I am Margaret Jackson.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for reaching us.