You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nicholas Lewis.

ASSISTANT: How may I help you today?

USER: I am planning to attend music concert at IAD, can you please help me with booking a flight ticket from MSP?

ASSISTANT: Sure, may I know your travelling dates, please?

USER: Sure, I would like to take off on Oct 12 and return on Oct 14.

ASSISTANT: Do you need any specifications for your travel?

USER: Yes, I would like to depart during afternoon time.

ASSISTANT: Please wait a moment.

USER: I prefer normal cost airline.

ASSISTANT: Sorry, there are no flight tickets available on your journey dates.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching our service.

USER: You are welcome.