You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please check is there any flight available between DFW and CLT?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Thank you, my departure is on Apr 08 and I would like to return on Apr 10.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a connecting flight for my journey.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: Please provide your name.

USER: Sure, my name is Jennifer Hall.

ASSISTANT: There are no flights found under your preferable details.

USER: Oh! Sad to hear that. I will find another alternative to complete my trip. Thank you for the information.

ASSISTANT: Welcome, have a great day.