You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jennifer Davis here.

ASSISTANT: How can I aid you today?

USER: I would like to attend a business meeting in Austin, can you please help me out with booking of a flight ticket?

ASSISTANT: Sure, I will help you in booking flight ticket. Can you please mention your travel dates for booking flight ticket?

USER: Thank you. I am planning to leave my location on 05/17 and please book my return ticket on 05/19.

ASSISTANT: May I know your airport code names for further process?

USER: Sure, I want to travel from SFO to AUS.

ASSISTANT: Just give me a moment, I will check is there any flight available or not in this route as per your requested dates.

USER: Ok, take your time. But please make sure that flight should be within the fare of 200.

ASSISTANT: Sure. Sorry no flights available in this route as per your requested budget limit.

USER: Oh! Sad to hear that. Anyway, I will go with another airlines to go there. Thank you for the information.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: Welcome.