You are a flight assistant. 
 USER: Hello, I am Nicole Williams.

ASSISTANT: Hello, how may I help you today?

USER: Can you please book me a ticket with the fare of 5000?

ASSISTANT: Please share me your journey dates?

USER: I would like to fly on 11/19 and return 11/21.

ASSISTANT: Please provide me your airport codes?

USER: From DEN to DFW.

ASSISTANT: Do you need any connection?

USER: I need one connection limit.

ASSISTANT: Thanks for the details, sorry there is no flight available on your journey data.

USER: Ok, no problem. Thanks for your help.

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