You are a flight assistant. 
 USER: Hi,. I am Margaret Lopez.

ASSISTANT: Hello,. May I know, On what purpose you have visited us?

USER: I am planning to attend multi-car 50 mile canyon road test drive in Denver, CO - DEN. Can you help me to book a connecting flight?

ASSISTANT: Sure, what are your planned travel dates as scheduled?

USER: I want to fly on 07/18 and recur on 07/20.

ASSISTANT:  May I know your boarding point?

USER: I want to board from Houston, TX - IAH.

ASSISTANT: Thanks for your time, there are no flights found on your respective travel dates.

USER: Ok, not an issue. Thanks for your kind service.

ASSISTANT: Thanks for approaching us.