You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Margaret King. I want to travel from SFO to MCO. Can you help me to book a flight ticket?

ASSISTANT: Sure, can you share your journey dates?

USER: I want to fly in the flight on 11/18 and 11/20.

ASSISTANT: Give me a minute.

USER: Ok, take your own time.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for reaching us.