You are a flight assistant. 
 USER: Hi, I am Mark Thomas.

ASSISTANT: Hello, how can I assist you?

USER: Could you please help me to book a flight ticket from SFO to meet my old friend to start a new business in HOU?

ASSISTANT: Sure, may I know your travel dates?

USER: I need to depart on July 29th and my return date will be on July 31st.

ASSISTANT: Do you have any specifications?

USER: I want to return in the morning.

ASSISTANT: Ok, please wait a minute.

USER: Ok,  I need a break in between my journey.

ASSISTANT: Sorry, there were no flights found on your route due to abnormal weather conditions.

USER: No issues, I'll choose any alternative to reach my destination. Thank you for your information.

ASSISTANT: Thank you for opting us.