You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Patricia Johnson. Can you please help me in booking a flight ticket from PHL to DFW?

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: I want to fly on Oct 10 and return on Oct 12.

ASSISTANT: Do you have any specifications?

USER: I would like to depart in the afternoon time.

ASSISTANT: May I know your name please?

USER: Already I mentioned above.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Not an issue. Thank you.

ASSISTANT: Thank you.