You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: My name is Stephen Johnson. I would like to travel from LGA to HOU to attend my friend marriage. Can you please help me to book a flight?

ASSISTANT: May I know your trip dates?

USER: My trip dates are 05/07 and 05/09.

ASSISTANT: Sorry, no flights had been found on your name.

USER: That's ok. Thank you for checking.

ASSISTANT: Thank you for choosing us.