You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you at this moment?

USER: Here Davis Brown and I have a meeting which I have to attend in February month, so I need an advance ticket booking from AUS to SFO, can you help me in that?

ASSISTANT: Yes, I am glad to aid you. Can you please provide your preferable dates of journey?

USER: Thank you and my dates are 02/23 and 02/25.

ASSISTANT: Give me a moment to check a flight availability.

USER: Sure.

ASSISTANT: Sorry Brown, there is no route to your preferred destination.

USER: Fine with that, I can ask my friend to take in his car.   Thank you for immediate response.

ASSISTANT: My pleasure, thank you for opting our service.