You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Emily Allen.

ASSISTANT: Emily, how may I help you?

USER: Can you please book a flight ticket from IAH to LAX?

ASSISTANT: Sure, please share your travel dates.

USER: Sure, I need to travel on dates of 09/27 and 09/29.

ASSISTANT: Please hold on for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, no flight found.

USER: Oh! It is sad to hear. Anyway, I will go with another agency this time.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your time.