You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Mark Moore.

ASSISTANT: How may I assist you?

USER: I want to book a ticket from DEN to MSP, can you help me?

ASSISTANT: Can you please provide the travel dates?

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

ASSISTANT: Sorry, there are no flights available on your dates.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching our agency.