You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please book a flight ticket from DFW to HOU?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Can I have your name?

USER: Sure, myself Edward Evans.

ASSISTANT: May I know your planned journey dates?

USER: I have planned my travel dates as May 04 and May 06.

ASSISTANT: Let me know your connection limit.

USER: I am looking for direct flight so please make sure that.

ASSISTANT: Do you have any other requirements?

USER: I would prefer normal cost airlines so please check with that.

ASSISTANT: Please, wait for a while.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, there were no flights available that matches your requirements.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for approaching us.

USER: Most welcome.