You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: This is Donald Hernandez. I want to book a ticket from MN - MSP to DC - IAD.

ASSISTANT: Sure, Can you please provide your journey dates?

USER: Ok. Departure June/15 , Return June/17. I have price limit is 5000. And 1 connection only.

ASSISTANT: OK, Please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for being patience, We are unable to find a flight ticket as per your specifications.

USER: Ok. Thank you.