You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me to book flight ticket from MSP to DEN?

ASSISTANT: Sure, can you please share me your travelling dates?

USER: My trip dates are Jan 05 and Jan 07.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Is there any other specifications?

USER: I prefer a connecting flight with normal cost airline.

ASSISTANT: May I know your name?

USER: I am Timothy Young.

ASSISTANT: Sorry, there no flights with your given details.

USER: That's ok, thank you for the help.

ASSISTANT: Thank you for reaching us.