You are a flight assistant. 
 USER: Hello, myself Catherine Brown.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to book a flight ticket to OAK from PHX, can you please help me out?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your planned travel dates?

USER: Sure, my planned travelling dates are Dec 14 and Dec 16.

ASSISTANT: Do you have any other preferences?

USER: Yes, I need an airline within the normal cost.

ASSISTANT: Ok, please wait for a while.

USER: Ok, take your time.

ASSISTANT: We found a connecting flight in Delta airlines with flight number 1029 having a normal-cost.

USER: Ok, please confirm my reservation.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for the help.

ASSISTANT: Thank you for approaching us.