You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Rebecca Taylor, can you help me to book a flight from MCO to PHL?

ASSISTANT: Ok, may I know your travelling dates?

USER: My travelling dates are 04/21 and 04/23.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: sorry, no flights found on your route to reserve your ticket.

USER: That's fine, thank you for your time.

ASSISTANT: Most welcome.