You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: Jessica Adams this side.

ASSISTANT: Nice to meet you Jessica Adams .

USER: I am planning to visit DEN with my brother, can you please help me in booking a flight ticket from SEA?

ASSISTANT: Sure, I will book it for you. May I know your travelling dates please?

USER:  My departure is on 04/24 and my arrival is on 04/26.

ASSISTANT: Sorry to inform you, there is no flight available on your provided dates.

USER: That so sad to hear. Thank you for checking.

ASSISTANT: It's my pleasure.