You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you now?

USER: Gregory Hall here, can you book a flight from LGA to DCA to meet my business partner?

ASSISTANT: Sure, can you please mention the travelling dates of your journey?

USER: Ok, my trip dates are 09/01 and 09/03.

ASSISTANT: Sorry Gregory, there are no flights found on your requested dates.

USER: No issues, thank you for checking.

ASSISTANT: Thank you for approaching us, have a nice day.