You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Stephanie Williams, can you help me to book a flight?

ASSISTANT: Sure, may I know your travelling dates to start your booking process?

USER: My travelling dates are 07/26 and 07/28.

ASSISTANT: Ok, may I know the codes of airport you want to travel?

USER: My source is LAS and my destination is OAK.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Ok, there is a flight 1001 in Delta airline matching your details with price 100. Shall I proceed?

USER: Yes, proceed with booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: You are welcome, have a safe journey.