You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Michael Miller. I am planning to travel from JFK to SFO. Can you please help me to book a ticket?

ASSISTANT: Let me know your travelling dates.

USER: I want to depart on Jan 26 and arrival on Jan 28.

ASSISTANT: Do you have any preference?

USER: I need a connecting flight with normal - cost airlines. My depart time should be evening.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you.