You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Jessica Hill. I am planning to conduct an woman empowerment event at Houston on 01/19 and my return date will be on 01/21, can you help me in booking?

ASSISTANT: Sure, may I know your airport codes?

USER: My source and destination airport codes are DTW and HOU.

ASSISTANT: Sorry, there are no flights available on your trip dates.

USER: No issues, I'll choose any alternative. Thank you.

ASSISTANT: Thank you for choosing us.