You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want  to travel from HOU to LAS, can you help me to find a flight?

ASSISTANT: Sure. Please tell me your trip dates?

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

ASSISTANT: May I know your good names?

USER: I am Sarah Lee.

ASSISTANT: Sorry Lee, no reservation found as per your details.

USER: No issues, it's ok. Thanks for your checking.

ASSISTANT: Thank you for reaching us.