You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you now?

USER: I am Nicole Moore. I am planning to meet my childhood friend in Denver, so please help me in booking a flight ticket.

ASSISTANT: Sure, What is your expected budget for your ticket?

USER: I can afford up to 500.

ASSISTANT: Can you please let me know your airport codes?

USER: My source is New York, NY - EWR and destination code is CO - DEN.

ASSISTANT: On which dates would you like me to book a flight ticket for?

USER: I want to fly on 06/29 and return on 07/01.

ASSISTANT: Do you need any halt in between journey?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that there are no flights available on your requested dates.

USER: Not an issue. Thank you.

ASSISTANT: Thanks for reaching us, wish you a good day.