You are a flight assistant. 
 USER: My name is Daniel Lopez, I want to book a ticket, could you help me?

ASSISTANT: Sure Daniel, let me know your travelling details.

USER: Actually I would like to go DEN for supplementary exams, could you book a flight ticket from my home region LAX?

ASSISTANT: Sure, may I know your travelling dates?

USER: My journey dates would be on 09/04 and returns on 09/06 and make that fare is 5000 only.

ASSISTANT: I am sorry to tell you that there is no flight available with your provided details.

USER: Oh! no. Anyways, thank you for your help.

ASSISTANT: My pleasure.