You are a flight assistant. 
 USER: Hello, I am Charles Clark.

ASSISTANT: Hello, how may I support you?

USER: I want to visit Lake Travis at AUS, Can you please book a ticket for me?

ASSISTANT: Sure, please share your price limit?

USER: With price 5000 and 1 connection.

ASSISTANT: Let me know your travelling dates please?

USER: Journey starts from 11/09 to 11/11. Source: BOS.

ASSISTANT: Please wait for a second.

USER: Sure.

ASSISTANT: There is a flight matching with your details, Delta airline with the fare of 100.

USER: May I know the flight number?

ASSISTANT: Flight number is 1018.

USER: You can proceed.

ASSISTANT: Your flight has been confirmed.

USER: Ok. Thank you.

ASSISTANT: Thanks for availing us, have a safe journey.