You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Kevin Lopez here.

ASSISTANT: How may I assist you?

USER: Reserve a flight ticket for me that is from SEA to HOU.

ASSISTANT: Sure, please let me know your travelling dates?

USER: My travelling dates for journey are 12/04 to 12/06.

ASSISTANT: There is a flight-1027 of Delta airlines is available for you, shall I book?

USER: Yes, confirm the flight ticket.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: Welcome.