You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Can you help me with booking ticket from ORD to MSP?

ASSISTANT: Sure, may I know your travel dates?

USER: Ok, my journey dates are from July 04 to 06.

ASSISTANT: Do you have any specifications?

USER:  No, I don't have any requirements regarding my journey.

ASSISTANT: May I know your name?

USER: Sure, I am Mark Clark.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your preferable travel dates.

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for approaching us.