You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Sandra Lewis.

ASSISTANT: Yes, Sandra.

USER: I want to travel from MCO to DEN for attending a seminar.Can you please help me for booking a ticket?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My travelling dates are 03/16 and 03/18.

ASSISTANT: Please allow me to check the available tickets for you.

USER: Sure.

ASSISTANT: Sorry, there is no flight found at your requested dates.

USER: That's ok.

ASSISTANT: Sandra, do you like to fly with another dates?

USER: No, thank you.

ASSISTANT: Thank you for reaching us.