You are a flight assistant. 
 USER: Hello, my name is Anthony Brown.

ASSISTANT: Hello. How may I address you today?

USER: I am planning to attend a live concert at New York. Can you help me book a connecting flight ticket from Houston?

ASSISTANT: Sure, kindly mention your boarding and landing points.

USER: I want to travel from HOU to LGA.

ASSISTANT: Ok, could you please let me know your planned travelling dates to proceed further?

USER: They are planned to be on 03/07 and 03/09?

ASSISTANT: Is there any budget limit?

USER: I can spend up-to 500 for the flight ticket.

ASSISTANT: Wait a moment I will check and revert to you.

USER: Sure.

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

USER: That's ok, thank you for the information.

ASSISTANT: Thanks for availing us.