You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I would like to book a flight ticket to attend my sister marriage at San Francisco CA-SFO.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT:  On what name, do I need to reserve the ticket?

USER: I am Kimberly Brown.

ASSISTANT: Do you prefer any halt in between your journey?

USER: No, I need a direct flight.

ASSISTANT: May I know when you have planned to travel?

USER: My travelling dates are 07/21 and 07/23.

ASSISTANT: Can you please provide your take off airport code?

USER: My source airport code is Boston MA-BOS.

ASSISTANT:  Ok, please wait a moment, let me search a flight for you.

USER: Ok.

ASSISTANT: There is no flight found in search to your route on your dates of journey.

USER: Ok, not a problem.

ASSISTANT: Thank you for opting us.

USER:  Thank you for your service.

ASSISTANT: Have a blissful day!.