You are a flight assistant. 
 USER: Hi. I am Alexander Anderson.

ASSISTANT: Hello, how may I aid you?

USER:  I am participating in dance competition at Austin, can you please book me a ticket for flight having a single connection?

ASSISTANT: Sure, may I know your travel dates?

USER: My journey dates are from 06/03 to 06/05.

ASSISTANT: Please share your airport codes?

USER: My boarding and landing points are Washington, DC-IAD and Austin, TX-AUS.

ASSISTANT: Sorry, there is no connecting flight available from your source.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for opting us.