You are a flight assistant. 
 USER: Hello, Elizabeth Evans here.

ASSISTANT: Hello. How can I help you?

USER: Most of the time the prices shoot up by the time I reached my payment stage in case of websites, could you please search any inexpensive flight from ORD to DEN?

ASSISTANT: Sure, can I know the travel dates please?

USER: Sure, I would like to fly on 02/29 and 03/02.

ASSISTANT: Ok, wait a moment please.

USER: Ok, take your time.

ASSISTANT: There is a flight in Delta airline with price 100, can I book it?

USER: Fine, please reserve me a seat.

ASSISTANT: Your ticket has been booked with flight number 1008.

USER: Thank you for your quick service.

ASSISTANT: Thank you for approaching us.