You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Michelle Evans here.

ASSISTANT: How can I succour you?

USER:  I am planning to attend political meeting at Houston, can you please help me with booking a flight ticket from DTW to HOU?

ASSISTANT: Can you please tell your travelling dates?

USER: Sure, my travel dates are from 11/01 to 11/03.

ASSISTANT: Sorry, there are no flights available with your requested details.

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you and have a nice day.