You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I would like to book a flight ticket from IAH to attend a musical event at IAD. Can you help me in this?

ASSISTANT: Sure, may I know your journey dates?

USER: My journey starts on Apr 11 and returns on Apr 13.

ASSISTANT: Ok, is there any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Let me know your name please.

USER: My name is William Hill.

ASSISTANT: We found a connecting flight in an economy class with United airlines. Shall I proceed?

USER: Yes, please.

ASSISTANT: Your ticket has been booked with flight number 1027.

USER: Thank you for your assistance.

ASSISTANT: Thanks for opting us.