You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Nancy Garcia. Can you please help me in booking a flight ticket from ORD to HOU?

ASSISTANT: Sure, I will help you in booking the fight ticket. May I know your travelling dates pleas?

USER: Thank you. My travelling dates are 09/28 and 09/30.

ASSISTANT: Sorry, there are no flights found.

USER: It's ok, not a problem with that. Thank you.

ASSISTANT: Thank you for reaching us.