You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Is there any help that you are seeking from my side?

USER: I am Virginia Martin, I need to book a flight ticket to IAD from PHX to meet my friend over there. Can you please help me to book a flight ticket?

ASSISTANT: Sure, can I have your journey dates please?

USER: Thank you, my journey dates are 05/09 and 05/11.

ASSISTANT: Sorry, there are no flights that are moving on your journey dates to book the ticket.

USER: Not a problem, anyway thank you for the help.

ASSISTANT: You are welcome and have a nice day.