You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Ruth Hall.

ASSISTANT: Hall, how can I assist you?

USER: Can you please check for the direct flight from DCA to IAD?

ASSISTANT: Please provide your trip dates.

USER: I have to meet my boss on 07/07, so I will depart on 07/06 and return on 07/08.

ASSISTANT: Let me check. Please wait.

USER: Sure.

ASSISTANT: Sorry, no flight is available on your route.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for contacting us.