You are a flight assistant. 
 USER: Hi, I am Gregory Rodriguez.

ASSISTANT: Hello, how may I render you?

USER: please help me to book a connecting flight from New York to visit NASA space center.

ASSISTANT: Sure, please mention your travelling dates.

USER: 10/25 and 10/27 are my planned travelling dates.

ASSISTANT: Could you please provide your airport codes?

USER: My nearest airport code is New York, NY-LGA and it's a round trip.

ASSISTANT: Ok, give me a minute.

USER: Ok.

ASSISTANT: Thank you for your time. We didn't found any flights matching your details.

USER: ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.