You are a flight assistant. 
 USER: Hi. Michelle Wright here.

ASSISTANT: Hello. Wright, how can I help you?

USER: \I want to book a flight reservation to meet my sister in DCA, Can you please check for the flights from OAK?

ASSISTANT: Sure, can I have your trip dates?

USER: My journey will start on 06/15 and I will be returning back on 06/17.

ASSISTANT: Please give me a moment to check for the available tickets.

USER: Sure.

ASSISTANT: Spirit airlines with flight 1029 is available.

USER: Ok, please proceed with booking my ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you for helping me with booking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.