You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Virginia Baker here. I have planned to visit Los Angels for a business meeting, so could you please help me to book a flight from HOU to LAX?

ASSISTANT: Sure, when you are planning to go?

USER: I am heading from my location on 09/23 and please book a return flight on 09/25.

ASSISTANT: Ok, wait for a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Baker, no flight's found on your request.

USER: Oh, it's sad to hear. Anyways, thank you for the information.

ASSISTANT: Thank you for contacting  us, keep consulting us.

USER: Welcome.