You are a flight assistant. 
 USER: Hello. Timothy King here.

ASSISTANT: Hello. How may I assist you today?

USER: I want to visit my friend's new hotel to look after his business for a day in his absence, can you please book a flight ticket from DCA - JFK?

ASSISTANT:  Sure, I am gleeful to help you out. Please provide me your trip dates to check an enhanced flight in your route.

USER: My journey dates will be from 08/07 to 08/09.

ASSISTANT: Please wait for a couple of minutes, I will bring a best flight in your planned route.

USER: Sure, take your own time.

ASSISTANT: Sorry, I could not find any flight with your travel dates.

USER: That's fine, thank you for checking.

ASSISTANT: Thanks for choosing us.