You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a flight ticket with in the price limit 1000 to visit Denver Zoo. Can you help me?

ASSISTANT: Ok, to proceed may I know your dates of journey?

USER: I My journey dates would be on 03/04 to 03/06.

ASSISTANT: Do you have any connection limit?

USER: I need one connection between the flights.

ASSISTANT: Can you provide me your airport codes?

USER: My airport codes are OAK-DEN.

ASSISTANT: Ok, we found an Southwest airline with flight number 1007 available at this moment and the fare is 300. Shall I proceed?

USER: Yes, you can.

ASSISTANT: Can you provide your name to proceed?

USER: My name is David Lopez.

ASSISTANT: Your booking is confirmed.

USER: Thanks for your response.

ASSISTANT: Thank you for picking us.