You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in booking from HOU to DTW?

ASSISTANT: Sure, can you share your trip dates?

USER: My travelling dates are from Oct 4 to Oct 6.

ASSISTANT: Do you have any specifications?

USER: I prefer normal cost airline to travel.

ASSISTANT: May I know your name?

USER: My name is Emily Nelson.

ASSISTANT: Sorry, there is no flight on your given preferences.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for choosing us.