You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am planning to book my flight ticket in economy class from San Francisco. Can you please help me out?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travelling dates are Dec 17 and Dec 19.

ASSISTANT: Do you need any specifications?

USER: No, specifications. But please confirm my flight ticket with name Joshua Williams. If any you found.

ASSISTANT: Can I know your airport codes too?

USER: My travelling airport codes are SFO and MSP.

ASSISTANT: There is a flight with connection 2 with flight number 1027, can I proceed?

USER: Ok, please proceed with booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1027.

USER: Thank you for your help.

ASSISTANT: Thank you for your services.