You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: I am Paul Phillips, can you help me to book a flight from IAD on Mar 10?

ASSISTANT: Sure, I am happy to help you with that. Can I know your destination code and return date?

USER: I am planning to return from PHL on 03/12.

ASSISTANT: Ok, please wait for a minute.

USER: I need a connecting flight.

ASSISTANT: Sorry to say that, there are no flight's available based on your travelling dates.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for reaching us.