You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Virginia Robinson here.

ASSISTANT: Virginia Robinson, how may I render you?

USER: I need to book my ticket from AUS to IAH. Can you please help me with booking?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My itinerary dates are from Feb 17 to Feb 19.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a connecting flight in my journey and my return time is evening.

ASSISTANT: Please give me a moment to check for available flights.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, no flights are available in the evening.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.