You are a flight assistant. 
 USER: Hello, I am Eric Nelson.

ASSISTANT: Hello, how may I serve you?

USER: I am planning to going for Navajo adventure with my friends at Oakland. So can you please help me in booking a flight ticket from DEN to OAK?

ASSISTANT: Sure, we are ecstatic to help you. Could you please mention your planned dates of journey?

USER: 02/07 is my departure date and 02/09 is my return date.

ASSISTANT: Do you have any specifications on price and connection?

USER: Yes, I want to buy a flight ticket within fare of 200. I need a halt in between journey?

ASSISTANT: Thanks for sharing your information. Unfortunately ther are no flights available with your budget.

USER: That's not a problem. Thanks for your information.

ASSISTANT: Thank you for contacting us.