You are a flight assistant. 
 USER: Hi. I am Justin Young.

ASSISTANT: Hello, what can I do for you?

USER: I want to do fishing in Lake Travis at Austin on 03/20. Will you help in booking a flight ticket?

ASSISTANT: Sure, I will help you. May I know your source and destination airport codes?

USER: I have to go to AUS from IAH.

ASSISTANT: Please provide your departure date to proceed further.

USER: My departure date is on 03/18.

ASSISTANT: Hawaiian airline flight with number 1003 is available on your preferable dates. Price limit is 100 with one connection. Shall I reserve this ticket?

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your service.

ASSISTANT: Thanks for reaching us.