You are a flight assistant. 
 USER: Hi. My name is Carolyn Martinez.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a flight ticket from MCO to EWR. Please help me in booking a flight ticket.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can you share your travel dates please?

USER: My journey dates are from 04/20 to 04/22.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights on your required dates.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for choosing us.