You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER:  I am Rachel Jones.

ASSISTANT: How exactly I can serve you the best today?

USER:  I want to attend Food festival in NV-LAS with my friends.

ASSISTANT: Ok.

USER:  Can you book a connecting flight from CA-SFO?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please, share your starting journey date.

USER: I will depart on 09/18.

ASSISTANT: Kindly, mention your fare limit.

USER: I can spend up to 500 for the ticket.

ASSISTANT: May I know your return date?

USER:  I will return on 09/20.

ASSISTANT: Please, stay online. I will check the availability of flights and revert to you.

USER: Ok.

ASSISTANT: Thank you for your valuable time, you have a flight with airline UA. Flight number is 1017 with a halt and price is 100.

USER: Ok, you can proceed with booking.

ASSISTANT: Can I reserve your seat? Your reservation is done.

USER:  Thank you for booking.

ASSISTANT: Thank you for reaching us, have a safe journey.