You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sarah Hall.

ASSISTANT: How can I assist you now?

USER: Will you please assist me in booking a flight ticket to Denver, DEN as I am planning to attend for my brother's engagement?

ASSISTANT: Sure, I am glad to assist you.

USER: Thank you.

ASSISTANT: When are you planning to start your journey?

USER: I would like to start on 09/18.

ASSISTANT: Can I have your boarding point?

USER: Oakland, OAK is my boarding point.

ASSISTANT: Let me know your arrival date, please.

USER: My return will be on 09/20.

ASSISTANT: Thank you for sharing the details, wait for a while.

USER: Ok.

ASSISTANT: Thanks for your time, there is a connecting flight available with fare 200 in Southwest airline. Shall I proceed further with booking?

USER: Yes, you can proceed.

ASSISTANT: Your reservation has been confirmed with flight number 1028 in economy class.

USER: Thank you for aiding me.

ASSISTANT: Thank you for reaching us.