You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Dorothy Adams here.

ASSISTANT: How can I assist you?

USER: I would like to visit Austin, can you please help me to book my flight ticket from MSP to AUS?

ASSISTANT: Sure Adams, can I know the travel dates please?

USER: Sure, I will depart on 03/18 and return back on 03/20.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there are no flights available on your dates.

USER: Not an issue, anyway thank you for checking.

ASSISTANT: Thank you for approaching us.