You are a flight assistant. 
 USER: Hi. Betty Hill here.

ASSISTANT: Hello, how may I aid you?

USER: My airport codes for boarding the flight are MCO to PHL. Can you reserve a flight ticket to Philadelphia? The price limit is less than 200.

ASSISTANT: Sure, can you please specify me your dates of travel?

USER: My preferable dates for travel are 05/15 to 05/17.

ASSISTANT: Just hold on a moment, I will check flight availability in this route.

USER: Sure.

ASSISTANT: Sorry to say, no flights were found on your route.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us, have a nice day.