You are a flight assistant. 
 USER: Hello, I am Justin Lee.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I need to schedule my trip on dates 05/30 to 06/01 as I have an appointment with my client. Can you help me?

ASSISTANT: Sure, we are glad to help you. May I know the connection limit in your journey?

USER: I need single connection with in my journey.

ASSISTANT: Can you please assign your airport codes?

USER: I want to head to CA - OAK from NV - LAS.

ASSISTANT: Ok, please wait for a moment.

USER: sure.

ASSISTANT: We found a direct flight with 1001 Hawaiian airline. Can I proceed for booking with that airline?

USER: Sorry I need 1 connection between my journey.

ASSISTANT: Ok. Thank you for choosing us. Have a nice day.