You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I am Kevin Lee. I want to book a ticket for attend 1st International Conference on Water Security, in Los Angeles, LAX.

ASSISTANT: Share me your travel dates.

USER: Can you book a flight ticket with connection? My journey dates on 03/22 to 03/24.

ASSISTANT: Sure, Provide me your source.

USER: My source point is Houston, IAH.

ASSISTANT: How much is your fare limit for this journey?

USER: Price range should be under 200.

ASSISTANT: There is a flight with fare of 100 in single connection, shall I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed with UA airline, flight number is 1016.

USER: Thanks for your  help.

ASSISTANT: Thank you for choosing our service.