You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Good morning.

USER: Janet Johnson here.

ASSISTANT: How may I help you Janet?

USER: I want to fly from MSP to DCA to visit National Mall, can you help me for booking?

ASSISTANT: Sure. Please let me know your travel dates.

USER: My fly starts from 05/04 to 05/06. Make sure that connection limit is 1.

ASSISTANT: Janet, there are no flights available with your request.

USER: Ok, that's fine.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your services.

ASSISTANT: You are welcome.