You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Joshua Martinez. I want to travel from DFW to JFK. Can you book a flight ticket for me?

ASSISTANT: I will help you with that. Please can you share your journey dates?

USER: I would like to fly on 01/03 and 01/05.

ASSISTANT: Wait for a while.

USER: Ok.

ASSISTANT: I am sorry to say that there is no flight found.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Anyways, thank you for your help.