You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Daniel Green here. Can you please help me in booking a flight ticket from PHX to DCA?

ASSISTANT: Daniel Green, I am here to help you for this. Could you please share me your travel dates?

USER: Sure, my travel dates are from May 29 to May 31.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: At what time are you planning to depart and return?

USER: I would like to return in the afternoon.

ASSISTANT: Is there any other requirements?

USER: I need a connecting flight.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria.

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

ASSISTANT: Thank you very much for approaching our agency.