You are a flight assistant. 
 USER: Hello. I am Katherine Edwards.

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

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

ASSISTANT: Sure, we are ecstatic to help you.

USER: Thank you.

ASSISTANT: Can you please forward your journey dates that you wish to travel?

USER: Sure, I need to travel on dates of Sept 30 and Oct 02.

ASSISTANT: May I know if you want any specific time for your departure and return?

USER: I would like to depart and returning in morning time only.

ASSISTANT: Ok, Do you have any class preference?

USER: No, I am ok with any class.

ASSISTANT: Thanks for your details, there are no flights available at this moment matching your particulars.

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

ASSISTANT: Thanks for approaching us, have a great day.