You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I am Mary Roberts.

ASSISTANT: Nice meeting you Mary.

USER: Thanks, nice to meet you too. I want to go OAK next month for my film shooting purpose, can you please book a flight ticket from DEN?

ASSISTANT: Sure, I am glad to help you. Can you please provide your planned dates of travelling?

USER: Thank you, I want to take off on 09/29 and book my return ticket also on 10/01.

ASSISTANT: Please wait a moment to check the flights.

USER: Ok.

ASSISTANT: Based on your information, I have found a flight with 1 connection with the fare of 1100. Shall I proceed with this?

USER: But my price limit is 1000. Can you please check once again?

ASSISTANT: Sorry to inform you that, there are no flights available within that budget.

USER: Oh! It's ok no problem, I will go with another airline.

ASSISTANT: Thank you for reaching us, have a great day.

USER: Thank you for your service.

ASSISTANT: Welcome.