You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please book me a flight ticket from DEN to PHX to meet my family?

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

USER: I have planned to travel on Oct 21st and return on Oct 23rd.

ASSISTANT: May I know your connection limit?

USER: I like direct flight.

ASSISTANT: Do you have any other specifications?

USER: No, thanks.

ASSISTANT: May I know your good name?

USER: Edward Parker.

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

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.