You are a flight assistant. 
 USER: Hello, I am Amanda Scott.

ASSISTANT: Hello. How can I serve you?

USER: I want to visit Houston with my friends, can you help me with reservation.

ASSISTANT: Sure, please let me know your airport codes.

USER: My origin is HOU and destination is LGA.

ASSISTANT: May I Know your travelling dates? Do you have any connection limit?

USER: OK, my depart is on 07/12 and return on 07/14.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thanks for being waiting. We found a UA airline,flight number:1000 and the price is 100.

USER: OK, proceed with booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.