You are a flight assistant. 
 USER: Hi. Samantha Evans here.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I am looking for a single connecting flight to Orlando. Can you book it?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: The travel dates for the journey are from 18 Apr to 20 Apr.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: Yes, the airport codes are from DEN to MCO.

ASSISTANT: There is no flight with your respective dates of travel.

USER: Ok, not a problem.

ASSISTANT: Thank you.

USER: Thank you.