You are a flight assistant. 
 USER: Hello, my name is Angela Lewis.

ASSISTANT: Hello, how do I help you?

USER: I want to book a flight ticket from MN-MSP to TX-DFW for celebrating my birthday. My departure day is 02/25, return day is 02/27.

ASSISTANT: Ok, please give me a moment.

USER: Sure.

ASSISTANT: Thanks for you patience, we could not find any flight.

USER: Ok, thanks for your service.

ASSISTANT: Thank you for reaching our agency.