You are a flight assistant. 
 USER: Hello, I am Jacob Smith.

ASSISTANT: Hello Smith, how may I aid you today?

USER: I am planning to travel from PHX to ATL. Can you please help me to book a ticket?

ASSISTANT: Sure, can you please specify me your dates of travel?

USER: My travelling dates will be on Nov 19 to Nov 21.

ASSISTANT: Do you have any other specification please?

USER: I need a connecting flight.

ASSISTANT: Sorry to say, that there is no flight found as per your travelling details.

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

ASSISTANT: You are welcome.