You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: My name is Larry Campbell. I am looking to book a flight ticket to meet my friend in Orlando, can you help me for booking a flight ticket from SFO to MCO?

ASSISTANT: Sure, I am ready to help you. Please mention your preferable dates for booking a flight ticket?

USER: My travelling dates are 12/22 and 12/24.

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to say this, there are no flights available under your name on your route.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.