You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I need to book a flight ticket from IAH to MSP, Can you please help me for booking?

ASSISTANT: Sure, may I know your planned trip dates?

USER: I would like to travel on 04/03 to return on 04/05.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Please forward your name.

USER: Donna Miller here.

ASSISTANT: Sorry, there are no flights found on your specified trip dates.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for availing us.