You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I want to book my ticket from CLT to DFW. Can you please help me with booking a flight ticket?

ASSISTANT: Sure, we are happy to help you. Can you share me your travelling dates to book a flight ticket?

USER: My planned travel dates are Aug 20 and Aug 22.

ASSISTANT: May I know your name?

USER: Sure, my name is Christopher Lewis.

ASSISTANT: Do you have any other specifications?

USER: I would prefer not to fly a low-cost Airline.

ASSISTANT: Ok, wait for some time I will check and get back to you.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thanks for approaching us.