You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Angela Baker.

ASSISTANT: How may I aid you?

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

ASSISTANT: Sure, I will help you with that. May I know your travelling dates to proceed further?

USER: Sure, I need to travel on dates of 02/23 and 02/25.

ASSISTANT: Ok, please be on hold.

USER: Sure, take your time. But please make sure that connection 0.

ASSISTANT: Ok. Sorry, there is no direct flight in your route.

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

ASSISTANT: Welcome.