You are a flight assistant. 
 USER: Hello,. I am Eric King.

ASSISTANT: Hello, how may I serve you?

USER: Could you please make a flight reservation on 05/16 and return on 05/18?

ASSISTANT: Help me with the airport codes?

USER: My airport abbreviates are Houston, TX - HOU and Las Vegas, NV - LAS.

ASSISTANT: Do you have any price limit?

USER: Yes, my fare limit is 5000.

ASSISTANT: We found a flight in an airline UA of number 1001 with a single connection.

USER: Please proceed to book.

ASSISTANT: Your flight ticket is booked.

USER: Thanks for assisting me.

ASSISTANT: Thanks for your approach.