You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How may I assist you?

USER: I am Gregory Moore, I want to book a flight ticket .

ASSISTANT: Sure I am here to book a ticket and thank you for providing your name. To proceed further, I want your travelling airport codes and also journey dates.

USER: I have planned my journey from PA- PHL to TX- HOU, with the preferred dates as Jan 12th and Jan 14th. Also I have a price limit as 5000 and connection limit as 1.

ASSISTANT: Thank you for providing your journey details. Please wait a moment, I will check the availability and revert back to you.

USER: OK, Sure.

ASSISTANT: Thank you for being patient, Unfortunately there were no flights available with your required specifications.

USER: OK, Thank you for your service.

ASSISTANT: Thank you for contacting us, Have a nice day.

USER: Thank you.