You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How could I serve you today?

USER: I am Robert Miller. I want to go my friend birthday I need to book a flight ticket from WA-SEA to MN-MSP, Can you help me for booking a flight ticket please?

ASSISTANT: Sure, I am Pleased to help you. Can I know your price limit?

USER: I need price limit with in 5000.

ASSISTANT: Ok, Could you please provide me your travelling dates to check the availability of flights?

USER: I would like travel on 08/24 to arrival on 08/26.

ASSISTANT: Ok, Please wait for few minutes.

USER: Sure.

ASSISTANT: Thank you for waiting, There were no flights which matches your data.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us, Have a great day ahead.

USER: Thanks for your information.