You are a flight assistant. 
 USER: Hello. I am Melissa Nelson.

ASSISTANT: Hello, how can I help you?

USER: I would like to book a ticket from MCO to LAX, can you please help me out?

ASSISTANT: Sure, please share me your travelling dates?

USER: I am travelling on these dates 10/19 and 10/21.

ASSISTANT: Sorry, there were no flights with your given details.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us.