You are a flight assistant. 
 USER: Hi. Brandon Walker here.

ASSISTANT: Hello Walker, how may I aid you today?

USER: Can you book a flight ticket for my airport codes that is from EWR to SEA?

ASSISTANT: Sure, can you please share me with your dates of journey?

USER: The travel dates are from 27 June to 29 June.

ASSISTANT: Do you have any other specifications please?

USER: I need a single connecting flight.

ASSISTANT: May I know your class preference please?

USER: That does not matter.

ASSISTANT: Please wait for a moment.

USER: The return time would be in the evening.

ASSISTANT: Sorry Walker, there is no flight found as per your travelling details.

USER: That is not a problem. Thank you.

ASSISTANT: You are welcome.