You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Betty Collins, can you please help me in booking a flight ticket from DCA to MSP?

ASSISTANT: Sure, I will help you with that. Can you please provide your planned dates of journey?

USER: My travelling dates are from 11/09 and 11/11.

ASSISTANT: Sorry Collins, I have not find any flights which can travel to your destination point.

USER: It's ok, I will choose another way to travel.

ASSISTANT: Ok, thank you for reaching out here.

USER: Thank you for your information.