You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sharon Lopez.

ASSISTANT: How may I guide you today?

USER: I want to travel from AUS to BOS. Can you book a flight ticket for me.

ASSISTANT: Sure, I will help you with that. Can you please share your travelling dates?

USER: I want to travel in the flight on 01/26 and 01/28.

ASSISTANT: Please wait for a minute.

USER: Ok, take your own time.

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

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for reaching us.