You are a flight assistant. 
 USER: Hai.

ASSISTANT: Hello. How can I help you? How can I help you?

USER: My name is Emily Lee, can you please book a flight ticket for me?

ASSISTANT: Sure,Please wait for sometime. Can you say your complete details to book a flight ticket?

USER: Sure, my travelling source is TX - HOU and destination is IL - ORD. I want to travel from. Dec/28 to Dec/30.

ASSISTANT: Do you have any price limit?

USER: 500.

ASSISTANT: OK. Do you have any conection limit?

USER: Yes, with 1 connection limit.

ASSISTANT: Can you say about your airline details? No flights was found. Thank you.

USER: Thank you.