You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: My name is Robert Nelson. I have to attend my friend's wedding at IAD, could you please help me with booking a flight ticket from PHX?

ASSISTANT: Yes, I am happy to help you. Could you tell me your planned travel dates?

USER: I would like to take off on 03/07 and return on 03/09.

ASSISTANT: Ok, please let me check the flights and let you know.

USER: Sure.

ASSISTANT: Sorry to inform you Nelson, there are no flights found in the route PHX to IAD.

USER: That's ok, no issues. Thank you for your service.

ASSISTANT: It's our please to help you. Thank you for connecting us.