You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Raymond Allen.

ASSISTANT: How can I help you Raymond Allen?

USER:  I have a plan to travel from LGA to HOU with my subordinates. Can you please help me?

ASSISTANT: Sure, may I know your journey dates please?

USER: I would like to leave LGA on 02/21 and please book my return ticket also 02/23.

ASSISTANT: Please, wait a moment, let me check the flight availability on this route.

USER: Ok.

ASSISTANT: Sorry to say, there are no flights available on your provided dates.

USER: It's ok, no problem, I will go with another airline.

ASSISTANT: Thank you, have a great day.

USER: Thank you for your information.