You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am James Johnson. Can you please book a flight ticket from PHX to DFW?

ASSISTANT: Yes, can you share me your travelling dates?

USER: Thank you. I have planned to travel on dates of Mar 30 and Apr 01.

ASSISTANT: Do you have any specifications?

USER: I am looking for direct flight so please make sure that.

ASSISTANT: Give me a moment.

USER: Sure but please check for return time must be afternoon.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

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

ASSISTANT: Thank you for contacting us.

USER: Most welcome.