You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is George White.

ASSISTANT: OK, white tell me how may I assist you?

USER: I am trying to book a flight ticket on these dates that is from 10/02 to 10/05. Can you please help me in booking a flight ticket?

ASSISTANT: OK, I can help you to book your ticket. Can you please tell me your travelling locations?

USER: Sure. My source and destination codes are from AUS to HOU.

ASSISTANT: Sorry to say, there is no flight found your dates. Thank you for contacting us.

USER: Thank you.