You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What guidance do you need from our agency?

USER: Can you please book a flight ticket from EWR to DFW?

ASSISTANT: Yes, I can help you to book the flight ticket. Could you please send me your planned travel dates?

USER: Thank you. I have planned my travel dates as Apr 05 and Apr 07.

ASSISTANT: Ok, is there any timing preference?

USER: I would like to depart in afternoon time so please make sure that.

ASSISTANT: May I know your name please?

USER: Sure, myself James Collins.

ASSISTANT: Is there any other preferences that should met to your journey?

USER: I am looking for single stop over flight so please check with that.

ASSISTANT: Ok, please be on hold for a while.

USER: Sure, take your time.

ASSISTANT: Sorry to tell you, there is no flight available in this route which is departing in the afternoon time.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: You are welcome. Thank you for reaching us.

USER: Most welcome.