You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am Nancy Lopez. I want to meet my beloved one at San Francisco CA-SFO, help me in booking my flight ticket from Austin TX-AUS.

ASSISTANT: Sure, I am mirthful to help you.

USER: Thank you.

ASSISTANT: Kindly, mention your journey dates.

USER: Can you check the availability of flights from 02/17 to 02/19?

ASSISTANT: Do you have any specifications?

USER: Yes, I prefer a connecting flight so that I can do my shopping in between my journey.

ASSISTANT: Thanks for your details, there are no flights found on your specified journey dates.

USER: Ok,I will find out other alternative. Thank you for your effort.

ASSISTANT: Thank you for choosing us.