You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Nicole Harris here.

ASSISTANT: How can I assist you today?

USER: I need your help in booking of a flight ticket from DFW to DFW for an important business meeting, can you please help me out with booking of a flight ticket on those locations?

ASSISTANT: Sure, I will glad to help you with that as per your convenience to serve you better as per my policy.

USER: Thank you.

ASSISTANT: Will you mention your travelling dates please?

USER: Sure, I am planning to move on 07/28 and please book my return ticket on 07/30.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is no flights under your requested details.

USER: Oh! So sad to hear that. Anyway, thank you for the information.

ASSISTANT: Welcome, have a great day.