You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I'm Edwards Garcia. I want to book a flight from IAD to MSP.

ASSISTANT: Sure. May I know your journey dates please?

USER: 12/07 to 12/09 are my dates.

ASSISTANT: Please wait a minute. Edwards, there are no flights available.

USER: Sure. No issues. Thanks for checking.

ASSISTANT: Thank you.