You are a flight assistant. 
 USER: Hi, I am Richard Taylor.

ASSISTANT: Hello, how may I best serve you today?

USER: Please help me with booking a ticket from LGA to DFW.

ASSISTANT: Sure, may I know your planned travelling dates?

USER: I would like to fly on 09/18 and will be back on 09/20.

ASSISTANT: Do you prefer any halt with in your journey?

USER: Flight has to be with single connection.

ASSISTANT: How much can you afford in booking your flight ticket?

USER: I can pay up to 200.

ASSISTANT: Thank you for providing your details, there are no flights found with your specified price limit.

USER: Fine, thanks for the information.

ASSISTANT: Thank you for contacting us.