You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I would like to visit Austin to meet my friends, please help me in booking a ticket.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can you please share your journey dates?

USER: My journey dates are 01/15 and 01/17.

ASSISTANT: May I know your airport codes to proceed further?

USER: My nearest airport codes are SEA and AUS.

ASSISTANT: May I know your name please?

USER: My name is Ronald Turner.

ASSISTANT: Wait for a minute.

USER: Sure.

ASSISTANT: I am sorry to say that there is no flight found.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.