You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Larry Miller.

ASSISTANT: How can I assist you today?

USER: I would like to travel Minneapolis to meet my friend's for next week. Can you please help me in booking the ticket from IAD to MSP?

ASSISTANT: Sure, I am gleeful to help you. May I know your travel dates?

USER: I am willing to travel 09/18 and again I will be return back on 09/20.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting. Sorry Larry, there are no flights available for your desired intents.

USER: Not a big problem, anyhow thank you very much for your help.

ASSISTANT: Thank you for reaching us.