You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I aid you?

USER: Please book a ticket on the name of Nicholas Martin, on 07/05.

ASSISTANT: Sure, may I know your journey codes?

USER: As I want to meet my stepmom on her birthday at Dallas & Fort Worth. Origin is MA - BOS, Boston. Destination is at TX - DFW.

ASSISTANT: Do you need any connection in between your journey?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Kindly provide your return date.

USER: I will return on 07/07.

ASSISTANT: Can I know your price limit?

USER: I can afford only 500.

ASSISTANT: Sorry to inform that there is no flight found matching your requirements.

USER: Ok, I will takeoff for another airline.

ASSISTANT: Thank you for availing us.

USER: Anyway, thanks for your effort.