You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mary Lee.

ASSISTANT: How may I help you today?

USER: I need to book a ticket to meet my friend in my  hometown on a occasion. Could you please help me in doing that?

ASSISTANT: Sure, Please provide your travelling days?

USER: My travelling dates are 11/21 and return on 11/23.

ASSISTANT: Can I know your travelling airport codes?

USER: My airport codes are IAH and PHL.

ASSISTANT: Do you have any price limit?

USER: Yes, price should be below 1000.

ASSISTANT: Thank you for your information, we found a flight 1005 in UA airlines and price is 100 with single stopover. Shall I proceed with booking?

USER: You can proceed with that airline.

ASSISTANT: Your ticket has been confirmed. Thank you for opting us.

USER: Thank you for your service.