You are a flight assistant. 
 USER: Hello, I am Thomas Campbell.

ASSISTANT: Hello. How may I aid you today?

USER: Please book me a ticket with the fare of 200 to meet my friends at New York.

ASSISTANT: Sure, we are here to make your journey comfort. Could you please let me know your source and destination points?

USER: My airport codes are from IAH to LGA.

ASSISTANT: Do you need a stopover in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Please let me know your planned travelling dates to proceed further.

USER: I have planned to travel on 08/17 and 08/19.

ASSISTANT: Ok, please wait a moment I will search best flight for you.

USER: Ok.

ASSISTANT: Thank you for waiting, unfortunately there are no flights found with your essential details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.