You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you for the day?

USER: I am Robert Smith. I am planning to meet my colleague in Houston, can you help me in booking a flight ticket from PA - PHL to TX - HOU?

ASSISTANT: Sure, we are gleeful to help you.

USER: Thank you.

ASSISTANT: Can you please forward your journey dates?

USER: I would like to fly on 05/20, return on 05/22.

ASSISTANT: Do you prefer any halt in between journey?

USER: Yes, I need a halt.

ASSISTANT: We found a connecting flight with UA airlines, flight number 1015 and the fare of 100. Shall I proceed?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.