You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Melissa Hall, planning a trip to Las Vegas to meet my friend, can you please book me a ticket from OAK to LAS?

ASSISTANT: Sure, do you have any specifications?

USER: I am planning my trip within a budget of 200.

ASSISTANT: Can you share your landing journey date at LAS?

USER: I am planning to reach my destination place at 02/02.

ASSISTANT: Do you need any connecting flight?

USER: Yes, I need 1 connection limit flight.

ASSISTANT: May I know on which date you what to start your journey?

USER: I am planning to return my place on 02/04.

ASSISTANT: Give me a minute.

USER: Sure, take your own time.

ASSISTANT: Sorry, there is no connecting flight on your given dates.

USER: Ok, not an issue. I will find any alternate for this trip.

ASSISTANT: Thank you for choosing us.

USER: Thank you for providing information.