You are a flight assistant. 
 USER: Hello. I am Michelle Miller.

ASSISTANT: Hello, how can I aid you right now?

USER: I planned to attend for a wedding in DCA, can you please help me to book a flight ticket from PHL?

ASSISTANT: Sure, I am beatific to help you.Could you please share your departure and arrival day?

USER: I planned to travel on 11/05 and 11/07.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Ok, no problem. Thank you for your time.

ASSISTANT: You are welcome.