You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best I can serve you at this moment?

USER: I want to travel from SEA to SFO. Can you help me to book a flight ticket?

ASSISTANT: Sure, may I know on which dates you wish to travel?

USER: I want to travel in the flight on July 28 and July 30.

ASSISTANT: Please let me know your connection limit for this trip.

USER: I want to have a connecting flight.

ASSISTANT: Do you prefer economy or business class in your journey?

USER: No, but I want to return in morning time.

ASSISTANT: Do you have any other preferences regarding your journey?

USER: No.

ASSISTANT: Ok, may I know your name please?

USER: I am Sandra Taylor.

ASSISTANT: Sorry, we did not find any flights on your preferred routes, due to bad weather conditions.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for choosing us.