You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Could you please book a ticket with a connecting flight?

ASSISTANT: Sure, please provide your travel dates.

USER: My travel dates are 3rd Nov and 5th Nov.

ASSISTANT: May I know your airport codes?

USER: I am heading to AUS from SFO.

ASSISTANT: Do you have any preferences?

USER: I want to depart in the morning. And I prefer an economy class.

ASSISTANT: May I know your name?

USER: My name is Dennis Lewis.

ASSISTANT: Sorry, I did not find any flights for you.

USER: Not a problem, thank you.

ASSISTANT: Thank you for reaching us.