You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Justin Mitchell here.

ASSISTANT: How may I guide you today?

USER: Do you have any flight from HOU to meet my friend who was staying in DEN?

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: I would like to travel on 02/22 and return back to my place on 02/24.

ASSISTANT: Please wait for a minute.

USER: Sure, take your own time.

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

USER: That's fine, thanks for your information.

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