You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you help me to book a flight ticket from HOU to DTW?

ASSISTANT: Sure. Tell me your travel dates please?

USER: My travelling dates are 29 Sep to 01 Oct.

ASSISTANT: May I know your name please?

USER: I am Angela Johnson.

ASSISTANT: Are you looking for a stopover in your journey?

USER: Yes, I need a break in between journey.

ASSISTANT: Any other preferences?

USER: No.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for waiting. But I am sorry to say that there are no flights available.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you.