You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: Emma Harris here.

ASSISTANT: Welcome to flight booking agency Harris.

USER: I want to attend a seminar in Phoenix urgently. So I need to go in direct flight. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am glad to help you. Can you please provide your planned dates of travelling?

USER: My departure date is 06/06 and return date is 06/08.

ASSISTANT: Ok, may I know your nearest genesis and terminus airport codes for booking?

USER: My airport codes are DEN and PHX.

ASSISTANT: Please wait a moment to check the flights availability.

USER: Ok, I will wait.

ASSISTANT: Sorry to inform you that, there are no flights available with connection 0 in your planned dates of travelling.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for reaching us, have a great day.