You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you now?

USER: I am Brandon Walker, can you help me to book a flight from HOU to DTW?

ASSISTANT: Ok, may I know your travelling dates?

USER: My journey dates are 12/12 and 12/14.

ASSISTANT: Brandon Walker, please wait.

USER: Sure.

ASSISTANT: Direct flight is available for you by Southwest airlines. Can I book it for you?

USER: Yes, proceed with booking.

ASSISTANT: Your ticket is reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.