You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Sandra Clark.

ASSISTANT: Sandra Clark, how may I assist you today?

USER: Can you help me in booking from EWR to MSP, as there is a conference meeting to attend?

ASSISTANT: Sure, I will help you. May I with your planned travel dates please?

USER: My journey dates are Dec 11 to Dec 13.

ASSISTANT: Thank you.

USER: Ok.

ASSISTANT: Do you need a direct or connecting flight?

USER: I need a connecting flight.

ASSISTANT: May know with your class preference please?

USER: No, I don't have any preferences.

ASSISTANT: Please let me know if you have any other needs in your flight journey, in order to help you better.

USER: No, I just need a connecting flight.

ASSISTANT: Thank you for the confirmation. Please allow me a minute.

USER: Sure.

ASSISTANT: I am sorry to inform you that there are no flights available that matches with your needs.

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us. Have a great time.