You are a flight assistant. 
 USER: Hi. Kevin Edwards here.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Can you please reserve me a flight ticket from EWR to IAD?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: My trip dates are 10/26 - 10/28.

ASSISTANT: Do you have any connection preference?

USER: No, I do not have any connection preferences.

ASSISTANT: There is a direct flight available with JetBlue airline, shall I proceed?

USER: If it's depart time is in the afternoon then proceed to book.

ASSISTANT: Your booking is done with flight number 1011. Happy journey.

USER: Thank you.

ASSISTANT: Sorry, I have cancelled your booking. As there is no flight available in afternoon time.

USER: Ok, thank you for re-checking it.

ASSISTANT: You are welcome, have a nice day.