You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be at your service today?

USER: Rebecca Perez here. I want to book a flight ticket from EWR to MSP. Can you please help me in that?

ASSISTANT: Sure, we are glad to help you, may I know your journey dates please?

USER: My trip dates are Oct 05 to Oct 07.

ASSISTANT: Do you have  any class preference?

USER: I don't have any class preference.

ASSISTANT: May I know your connection limit please?

USER: I need a connecting flight.

ASSISTANT: Is there any more specifications?

USER: My return should be in the morning.

ASSISTANT: Thank you for your details, please be on hold for some time.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry, there are no flights are available matching your essentials.

USER: Ok, no problem. Thank you for your service.

ASSISTANT: Thank you for approaching us.