You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I address you today?

USER: Please reserve a seat to Oakland, OAK, because I am planning to attend to my granny's 100th birthday.

ASSISTANT: Sure, please let me know do you need any connection limit.

USER: I am comfortable to travel with any flight.

ASSISTANT: Can I know your planned travelling dates?

USER: Sure, I am planned to travel on 04/14 and arrive on 04/16.

ASSISTANT: Kindly share your boarding point.

USER: I will depart at Houston,HOU.

ASSISTANT: May I know your name please?

USER: Sure, I am Nicolas Harris.

ASSISTANT: Please wait a moment I will check and let you know.

USER: Sure.

ASSISTANT: Thanks for waiting, unfortunately there are no flights found with your requested details.

USER: Thanks for the information.

ASSISTANT: Thanks for choosing us.