You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, may I know your trip dates?

USER: I would like to travel on 06/26 to return on 06/28.

ASSISTANT: Do you have any other requirements?

USER: I need a economy class with connecting flight.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: May I know your name please?

USER: Sharon Johnson here.

ASSISTANT: Sorry, we regret to inform you that there is no flights available.

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

ASSISTANT: Most welcome.