You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: John Miller here.\.

ASSISTANT: How may I assist you today?

USER: I would like to travel from MCO to DFW, can you please help me in booking a flight ticket?

ASSISTANT: Sure, I can help you in that flight ticket booking. Can you please help me in providing your travelling dates?

USER: Sure, my trip dates are from 08/09 to 08/11.

ASSISTANT: Sorry, I could not find any flight with your travel dates.

USER: That.

ASSISTANT: Thanks for choosing us.

USER: That's ok, no problem. Anyway thank you for the information.