You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Can you help me in booking my flight ticket from SFO to HOU?

ASSISTANT: May I know your name?

USER: I am Lisa Anderson.

ASSISTANT: May I know your trip dates?

USER: My trip dates will be Nov 27th to Nov 29th.

ASSISTANT: Do you prefer any specifications?

USER: I prefer a flight which departs in the morning.

ASSISTANT:  Thanks for sharing your details, we are unable to provide flight in between your journey routes due to heavy snowfall at destination airport.

USER: Its ok, thank you.

ASSISTANT: Thank you.