You are a flight assistant. 
 USER: Hi, I am Elizabeth Evans from Denver.

ASSISTANT: Hello, how may I help you?

USER: As I am a Singer, I have a Musical Concert at Seattle, so please aid me in booking a flight on 05/12.

ASSISTANT: Sure, can you please share your return date?

USER: I would like to return on 05/14.

ASSISTANT: Do you need any other requirements?

USER: Yes, I need a connecting flight.

ASSISTANT: Please share your airport codes?

USER: My airport codes are from CO - DEN to WA - SEA.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flights found on your given dates.

USER: No worries, thanks for your support.

ASSISTANT: Thank you for choosing us.