You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I would like to go Detroit to meet my children as they are staying at hostel, So could you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know your travelling airport codes?

USER: My airport codes are MSP-DTW.

ASSISTANT: Please mention your travelling dates?

USER: My trip dates are 08/31 and 09/02.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry. there are no flight tickets available on your journey dates.

USER: No problem, Thanks for the information.

ASSISTANT: May I know your name for our data base requirement.

USER: Janet Robinson here.

ASSISTANT: Thank you for reaching our service.