You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mark Wright.

ASSISTANT: Mark, how may I assist you?

USER: I planned to attend for a wedding in PHL, can you please help me to book a flight ticket from MSP?

ASSISTANT: Sure, I will help you. Could you please provide me your trip dates?

USER: I prefer to travel on 10/14 and 10/16.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry Wright, there is no flight available on your preferred travel dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: You are welcome.