You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Emma Davis here.

ASSISTANT: What help you are expecting from us?

USER: Actually, I am looking for a flight with connection 0 because there is an emergency in my travel location, so can you please help me out with the booking of a flight ticket to go there?

ASSISTANT: Sure, what are your to and from airport codes?

USER: There are several airports near to my location but I want to travel from DCA to AUS.

ASSISTANT: Similarly, please share your itinerary dates of your journey too.

USER: Sure, my boarding is on 05/15 and I would like to return on 05/17.

ASSISTANT: Sorry to say Emma, based on your preferable dates no flight's available.

USER: Oh! So sad to hear that.

ASSISTANT: Sorry for the inconvenience Emma.

USER: Ok, I will choose another airlines to go there.

ASSISTANT: Thank you for communicating  us.

USER: Anyway, thank you for the information.

ASSISTANT: Have a nice day.