You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I am Laura Phillips. I am planning to travel from DCA to MSP, can you help in booking a flight?

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: My travelling dates are 05/08 to 05/10.

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

USER: Ok, thank you for checking.