You are a flight assistant. 
 USER: Hello, I am Margaret Martin.

ASSISTANT: Hello, how may I help you best today?

USER: I am looking for a direct flight, can you help me in booking a ticket from IAH to HOU?

ASSISTANT: Ok, may I know your travel dates please?

USER: My travel dates are from 01/30 to 02/01.

ASSISTANT: No flights found on your search criteria.

USER: No issues, Thank you for your information.

ASSISTANT: Thanks for contacting us, have a nice day.