You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is Sarah Nelson. I would like to travel from LGA to OAK to meet a friend, could you help me out?

ASSISTANT: Sure, I am glad to help you with it. Please share your planned travel dates.

USER: My preferable dates are from 03/20 to 03/22.

ASSISTANT: Do have have any price limit for this journey?

USER: My price limit is 200.

ASSISTANT: Please wait while I search a best flight for you.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, we have a flight from Southwest airline and it is costing 100. Shall I proceed with the booking?

USER: Please proceed with the booking.

ASSISTANT: Your economy class ticket is booked in flight number 1001.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.