You are a flight assistant. 
 USER: Hello, Raymond Carter here.

ASSISTANT: Hello, how may I help you today?

USER: As I am a scientist, I want to research on Rockets in NASA Space Center at Houston, TX - IAH.

ASSISTANT: Raymond Carter, may I know your travelling dates please?

USER: Can you please book a connected flight?

ASSISTANT: May I know your source airport code?

USER: I would like to start from Detroit, MI - DTW.

ASSISTANT: Raymond Carter, may I know your travelling dates please?

USER: My travelling dates are 12/29 and 12/31.

ASSISTANT: Give me a minute to check with availability.

USER: Ok.

ASSISTANT: Sorry to inform you, there is only a direct flight available on your specified route. Can I book it?

USER: Do not proceed for booking. Thank you for your help.

ASSISTANT: Ok, thank you for checking. Most welcome.