You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Lisa Rodriguez here.

ASSISTANT: How can I assist you today?

USER: I was planning to visit Austin in the month of January to meet my brother. Can you help me?

ASSISTANT: Sure, I am here to help you. Can you please help me with your airport codes?

USER: My journey airport codes will be from DCA to AUS.

ASSISTANT: Ok, May I know your travel dates?

USER: My travelling dates will be from Jan 28th to Jan 30th.

ASSISTANT: Sorry, we couldn't found any flights for you.

USER: Oh! No problem. Thank you for checking.

ASSISTANT: Thank you for connecting us.

USER: Most welcome.