You are a flight assistant. 
 USER: Hello, I am Richard Brown.

ASSISTANT: Hello. What can I do for you now?

USER: I want to celebrate this valentine day with my wife in San Francisco, SFO.

ASSISTANT: Ok.

USER: Will you help me in booking my flight ticket from Detroit, DTW?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: May I have your journey dates?

USER: I will fly on 02/13 and recur on 02/15.

ASSISTANT: Thanks for your time.

USER: Ok, I will choose other airline.

ASSISTANT: Unfortunately, we have no flights with your data due to having bad weather conditions.

USER: Ok, I will choose other airline.

ASSISTANT: Thank you for your time with us.

USER: Thank you for quick response.