You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Donna Thomas. I am looking for a flight from SEA to IAH, can you help me?

ASSISTANT: Do you have any particular time for departing and returning?

USER: I prefer to return in the morning.

ASSISTANT: Sure, can you please specify me your dates of travel?

USER: My travelling dates are 23 and 25 of Oct.

ASSISTANT: Do you have any requirements?

USER: I need a connecting limit.

ASSISTANT: Sorry to inform you that unfortunately there is no flights available by the given details.

USER: Oh! that very sad to hear.

ASSISTANT: Thank you for reaching us.