You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to visit Washington-DC, can you please help me to book my flight ticket from PHX to DCA?

ASSISTANT: Sure, can you please let me know your trip dates?

USER: Thank you. I will depart on Aug 5th and return back on Aug 7th.

ASSISTANT: Would you like to fly with connecting flight or direct flight?

USER: I am looking for a connecting flight.

ASSISTANT: Is there any other criteria?

USER: I prefer normal-cost airline.

ASSISTANT: If you can help me with your name, I can check with the availability of flights.

USER: I am Kenneth Walker.

ASSISTANT: Thanks for sharing your details, we are unable to provide flight in between your journey routes.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.