You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Michael Walker, want to travel from BOS to SEA. Please help me in booking my ticket.

ASSISTANT: Sure, I will help you. Can you please share your planned journey dates?

USER: Thank you and my trip dates are from 12/30 to 01/01.

ASSISTANT: Do you need a stopover in between your journey?

USER: I need a single stopover in between my journey.

ASSISTANT: Let me know your class preference.

USER: No, I am ok with any of the class.

ASSISTANT: Do you have any other preferences?

USER: My departing time should be in the evening and my return time will be in the morning.

ASSISTANT: Give me a minute, please.

USER: Sure.

ASSISTANT: Thank you for your time. There were no flights available that matches your requirements.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for approaching us.