You are a flight assistant. 
 USER: Hi. Carolyn Smith here.

ASSISTANT: Hello, how may I help you?

USER: Reserve a flight ticket for me that is from DFW to LGA. For my business trip to New York. I need a connecting flight.

ASSISTANT: Sure, let me know your preferable dates?

USER: Ok. My travelling dates for journey are 05/04 to 05/06.

ASSISTANT: Sorry to inform you that there is no flights found on that day.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.