You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Frank Clark. I want to book a ticket from LGA - MCO. Can you please help me to book a ticket with in the range of 200?

ASSISTANT: Ok Clark, when are you planning your journey?

USER: I have planned my journey dates are 03/07 to 03/09.

ASSISTANT: Clark, there are no flights available with your preferences.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.