You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Gregory Hill here.

ASSISTANT: Yes, Hill.

USER: I am looking for a connecting flight from MCO to IAD, can you please help me to book a ticket?

ASSISTANT: Sure, I will help you out. Please provide me your travel dates.

USER: My planned dates of trip are from 05/21 to 05/23.

ASSISTANT: Please wait a moment.

USER: Ok, take your time.

ASSISTANT: Sorry Hill, no flight is found in your route.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for reaching us.