You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Please help me in booking flight ticket from MCO to DFW.

ASSISTANT: Sure, may I know your travelling dates?

USER: My trip dates are June 20 to June 22.

ASSISTANT: On which name shall I reserve flight ticket?

USER: Nancy Lopez here.

ASSISTANT:  Do you need any specifications?

USER: I need a connecting flight.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.