You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Daniel Rodriguez. Can you please help me with booking a flight ticket from DCA to PHX?

ASSISTANT: Sure, can you share your trip dates?

USER: Trip dates are 12/13 and 12/15.

ASSISTANT: Do you have any preferences?

USER: I need a direct flight with depart at morning.

ASSISTANT: Give me a minute.

USER: Ok.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: No problem,thanks for the help.

ASSISTANT: Thank you for reaching us.