You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello,. How can I assist you?

USER: I am Elizabeth Adams . I like to travel from ORD to IAH .

ASSISTANT: Could you please provide your travelling dates?

USER: I prefer travelling on 01/01 to 01/03.

ASSISTANT: Please give me a minute to check. Unfortunately there is no flights with your specified details. Thank you.

USER: OK . Thank you .