You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Anthony Johnson. I am planning to travel from DFW to PHL.

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My travelling dates are 01/04 to 01/06.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights available under your preferable details.

USER: Proceed for booking. Thank you.

ASSISTANT: Welcome, have a great day.