You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Thomas Harris.

ASSISTANT: How can I help you today?

USER: Can you please help me to book a flight ticket to IAH from SFO in the month of November?

ASSISTANT: I understand your request and will be happy to help you. May I know on what dates you need booking?

USER: Thank you for considering my request, my planned dates of journey are 11/18 and 11/20.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, I will be wait for your response.

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: It's ok, I will go with the road trip to complete my trip. Anyways thank you for the information.

ASSISTANT: Thank you for choosing us, have a nice day.