You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: Please help me in booking my flight ticket from EWR to MSP?

ASSISTANT: Sure, please share your journey dates?

USER: My planned travel dates are Oct 18-20.

ASSISTANT: Do you have any specifications?

USER: I prefer to fly in economy class, which returns on the Oct 20th evening.

ASSISTANT: Are there any preferences?

USER: I need a connecting flight.

ASSISTANT: May I know your good name?

USER: Amy Gonzalez is my name.

ASSISTANT: Sorry, no flights found on your given details.

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

ASSISTANT: Thank you for choosing us.