You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is David King. I would like to travel to visit Charlotte, can you help me for booking?

ASSISTANT: Sure, may I know your travelling airport codes?

USER: My airport codes are HOU and CLT.

ASSISTANT: Can you please tell me your travelling dates?

USER: My travelling dates are 06/05 and 06/07.

ASSISTANT: In my search UA airlines are providing service on your route with 1 connection. Can I proceed?

USER: Ok, proceed.

ASSISTANT: Your ticket is booked with flight number 1004.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.