You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please find a flight for my journey from OAK to DEN for my business trip?

ASSISTANT: Sure, can you mention your travel dates please?

USER: My journey dates are from 4th of June and I will return on 6th of June.

ASSISTANT: Please share me your name.

USER: Myself Gregory Walker.

ASSISTANT: Do you have any connection limit?

USER: Yes I need a connecting with with well known airlines.

ASSISTANT: Is there any other requirements to be met?

USER: I need a normal cost airlines only. I would prefer economy class reservation.

ASSISTANT: Thank you for waiting and we have found a flight in an economy class with 1 connection in United Airlines and the fare of your flight will be 200. Do you like me to proceed your booking with this flight?

USER: Yes, please.

ASSISTANT: Your booking is done with flight number 1015.

USER: Thank you for assisting me.

ASSISTANT: Thank you for contacting us.

USER: You are most welcome.